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IPTV Application of Test Solutions
June 20 news: With the gradual development of Chinese IPTV scale, and apart from the policies and content of factors, user needs for the sustainable development of IPTV is particularly important.
Due to the characteristics of Chinese dwelling, the majority of home television sets installed in the living room, and some living room of the home did not install the broadband interface and equipment, if you want to install IPTV, on the need to reproduce the cabling, wiring will damage the living environment of home The beautiful, give life to facilitate a certain impact. In addition, the Chinese city at home, a home has 2 Units or more than 2 televisions it was very common, how to make the other one is also able to watch television Units IPTV, users are encountered in the development of practical problems.
The deployment of home networking and solve the cabling problem applications of IPTV. High-speed, flexible and stable family networks can enhance the IPTV user experience and satisfaction, will provide the impetus for large-scale IPTV to develop towards a more universal application of important factors. At the more high-end user base in such problems by the performance of the more obvious, to a certain extent affected the market into high-end users. Therefore, in order to better understand the market situation, we have enlisted with Shanghai as the research points, for the user market, three types of wireless solutions for the test comparison. For industry reference.
One case the user experience installation of IPTV users in Xinmin district.Home computer for desktop, have broadband, placed in the library on the north, one taian TV on the living room on the south, two rooms of about 5 meters apart.IPTV installation found that because of both the room too far away, hidden cables up to near 10 meters, heavy volume.The users express that the person enjoying watching IPTV to see the volume line and no effort and interest.And have children at home, the house after decoration, so long hidden cables neither an appearance also affects children's activities in the room.Installers can express TV moved from closer study of the master bedroom, the user is still required express Lamine line but also holes on the wall there is damage to the decoration, and are family watch television and not on the bedroom Convenience. Finally the user to weigh the results, decided to give up the IPTV and broadband upgrade.
User experience Case II a certain district, the city users, the mistress of 50 years old, is a standard television fans, their son back from college once a week.Computer installed in my son's room, television on the living room.At present, the IPTV set-top boxes in the living room, Modem at my son's room, the user must per-use IPTV to the son's room, put out lines, received a set-top box on.The user said that his son was not at home when such a pull to nothing, if the son is always at home, it is not convenient go out of my son's room, especially after her son paid a girlfriend is even more inconvenient.But I really have become accustomed to the use of IPTV, and hope to have good solutions.
User experience Case III The city in a certain district users, both husband and wife are faithful IPTV users, especially on-demand television, but because IPTV is installed in the living room, cold days when you can look at the living room, but after the cold weather, because of the living room without air conditioning can not be too late, had no choice but to watch cable television in the bedroom.The user said that the best can do a set-top boxes to support a few television sets, if we can do, they watch TV longer, otherwise can only afford to spare the pain, because spending money on the installation of IPTV hope to spend more . IPTV above case highlights the disadvantages of existing wiring, technically required to seek better solutions, such as wireless or select other existing wiring (power lines, telephone lines, etc.).
This research, we select the following three options for testing
1, PLC-use of electricity transmission lines 2;
2, Wi-Fi: 802.11a/b/g - Wireless transmission ;
3, wireless infrared audio transmission
As the following for us some of the test results data, the industry would like to have a better reference
Test 1-PLC power cat
Applications
Internal home power line wiring easy, electricity at the two ends of the cat can be connected to an electricity power line in the online
Technical characteristics
IP signal can be converted to electricity cats online in the power transmission encrypted signals
Can achieve one-to-many applications, from the ADSL Modem transmission to multiple set-top boxes
Plug and Play, no configuration
Limitations
Required to confirm connections at both ends of the power line at a power bus, during which there is no UPS or electric isolation
Test 2 - Wireless Transmission
Scenarios
ADSL Modem with the set-top box is not in one room, the cat can not use the PLC power mode
ADSL Modem with the set-top boxes do not have too much wall space
Technical characteristics
Signal frequency band of 2.4GHz band for public use, a number of frequencies available
Use 802.11a/b/g standards
Limitations
In order to achieve a better anti-interference ability, need to manually adjust the frequency of the use of points, must have the installation difficulty
Test 3 - Wireless infrared video and audio transmission
Scenarios
Home internal wireless signals (such as 2.4G cordless phones, wireless routers, etc.) less
Set-top box and TV do not cross two floors
Technical characteristics
Signal band for the 2.4G (2.400GHz ~ 2.483GHz) frequency can be used 4
Can simultaneously transmit video, audio and set-top box infrared remote control signal
ADSL Modem set-top boxes can be placed on the same location
Limitations
Found in the actual test signal vulnerable to interference, especially with household cordless telephone frequency band (2.4GHz). Interference after the testing process on the screen there is a clear phenomenon.
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