Due to the improvement of the terrestrial communication network, the competition for satellite communication has become more and more fierce. Today, large-capacity and low-price fiber-optic communication has been widely applied. The original IDR, data line, and telephone services that have been transmitted through satellites have gradually shrunk. How to give full play to the advantages of satellite communication itself, find the right location, and actively seek new satellite applications is crucial for the future development of satellite communications.
This article refers to the address: http://
IPTV is a combination of traditional TV broadcasting and broadband Internet applications. It is a hot topic in the broadcasting industry and the telecommunications industry in recent years. It is regarded as a strong competitor of digital TV and a major value-added service of the future broadband network. How to apply the advantages of satellite communications to IPTV? What are the possible entry points for satellite communications in IPTV applications? These are issues worth exploring.
Point of entry for satellite applications in IPTV
As one of the transmission means, satellite communication can be used as an access network or a transmission trunk channel. Therefore, in the application of IPTV, satellites can be cut in two forms. The first is to provide users with direct access mode. By installing the necessary satellite receiving equipment, the user directly receives the broadband signal from the satellite, similar to the DirecPC service. The outbound large carrier adopts IPoverDVB technology, and the user's information backhaul can pass the satellite. Incoming carrier channel, terrestrial Internet or wireless access is completed. The transmission of a large amount of downloaded information does not depend on the existing terrestrial network, but requires each network operator to push the content to the satellite, which will certainly occupy a large amount of satellite bandwidth. The direct entry method of satellites is unlikely to be adopted by network operators with extensive terrestrial network infrastructure. It may only be a necessary supplement or extension to areas that are not covered by existing networks, such as The remote broadband tourist network, such as remote tourist attractions and rural areas, can provide IPTV services by means of satellite direct-to-home.
IPTV requires sufficient network bandwidth support. China's telecom operators have laid a large number of fiber-optic lines to the national trunk network, and down to buildings, residential areas and even families. Despite this, tens of millions of user interactions and large-capacity video and audio downloads in IPTV applications, as well as about 20% of duplicate information on the network, directly lead to bandwidth congestion, reduced efficiency, slow response and long download times. . What emerged was the technology of server marginalization, content promotion, and local download.
For such two-way asymmetric applications represented by IPTV, satellite communication has more obvious technical, development and economic advantages and uses than terrestrial optical cable and wireless transmission. Therefore, another entry point for satellite communication in IPTV is to provide content distribution for a wide range of edge servers, using the unique features of satellite coverage, cost-insensitive distance, broadcast/multicast/unicast capability, etc. A node server in the IPTV network, thereby greatly improving transmission efficiency and saving the occupation of terrestrial transmission network resources.
Content distribution will be the main application method of satellite in IPTV service. How to apply it depends on what kind of operation mode will be adopted by China's IPTV industry. One possible way is for the platform operator to push content directly through the satellite to the edge media server closest to the end user, stored on the server for users to order on the local network; another possible mode is by the content producer and Content provider integrators distribute content to regional content operations platforms via satellite.
Content distribution through satellites can effectively solve the aggregation bandwidth bottleneck problem for network operators, and push content directly to the edge server, which can save a lot of trunk transmission costs, which is particularly attractive to those virtual operators. The application features of the program that can be easily and quickly distributed to various content operation platforms will also be welcomed by content producers and content provider integrators.
International development of satellite IPTV
Satellite natural support for point-to-multipoint distribution and bursting features will help satellite operators enter the emerging market of IPTV. Northern Sky Research (Northern Sky Research) estimates that the cumulative revenue of satellite IPTV services will reach $16 billion between 2005 and 2010.
SES-AMERICOM, the largest satellite service operator in the United States, and SES-AMERICOM, a subsidiary of SES Global Satellite Corporation, launched an IPTV service platform called IP-PRIME. It started as a US through the AMC-9 satellite on August 9, 2005. Telecom companies around the world provide IPTV content distribution services. IPPRIME is a centralized satellite delivery IPTV distribution system solution that bundles traditional SDTV, HDTV and voice and broadband Internet services to provide "triple play" functionality. SES-AMERICOM's IP-PRIME solution is an important milestone for broadband Internet TV in the United States. It can serve telecom companies of different sizes, especially attracting small and medium-sized operators, enabling them to save at the most cost-effective Voice, broadband and TV are transmitted over a single telephone line.
Some insiders predict that IPTV will become the platform for digital life in the future, and will have a positive impact on entertainment, communication and information services: "Consumers will promote the development of IPTV entertainment services, they want to freely choose programs and watch time. IPTV will be the audience Realizing a personalized entertainment experience. The charm of the entertainment options it offers will be irresistible.†If satellites can make a difference in this market, it will be very popular among satellite communication practitioners.
At Christmas it is nice, in addition to the tree decorated with
large and colorful Christmas balls, to surround yourself with
decorations with Christmas motifs to be distributed around the house.
Create the right atmosphere with this led light garland.
Portable & Versatile
1.The item have a base and could stand on anywhere.
2.Integrated hanging hook holes for ease of display on wall or just rest on mantle, self, table or dresser.
3.Can be displayed standalone or combined with other pieces to create an eclectic lighting installation.
3.Create a whimsy showpiece on the cake or candy table during the Wedding.
Christmas Motif Lights,Led Motif Light,Christmas Motif Led Rope Light,Christmas Motif Light Decoration
XINGYONG XMAS OPTICAL (DONGGUAN ) CO., LTD , https://www.xingyongled.com