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The current transmit result with the home plug 1.0 technology, in theory is about 14mbps, but the actual result in the laboratory is about 8mbps.
In real life, there must be a lot of electric appliances in a circuit, which always interfere with the home plug very badly, and the transmit may down to less than 2mbps. So, I believe you have the very average test result from your environment! And that's why this current technology only advice for home use(Which may require only very little bandwidth usage).
HomePlug Technology
Q: What are the benefits of using power outlets to connect devices found in the home?
A: Most homes have multiple power outlets in every room, and power outlets are all connected together through the electrical wiring already installed in the home. Since HomePlug technology allows the power outlets to do "double duty" as both a power source and a network port, products can implement this technology at a lower cost.
Q: What are the challenges of using power outlets to connect devices in the home?
A: Past challenges of using power outlets to connect devices included multiple sources of electric noise (which could interfere with data signals), and a lack of industry specifications. The HomePlug technology has overcome these challenges by creating a specification that uses advanced, optimized algorithms in semiconductor technology.
Q: Is the HomePlug powerline technology compatible with other home networking technologies (including phone line, wireless, and structured wiring)?
A: The HomePlug technology does not cause interference to other technologies. In fact, much work was done to ensure that the products using the HomePlug technology would co-exist with other methods of home networking.
Because power outlets are located on nearly every wall of a home, they are a logical choice to use for a data connection. Even though some newer homes are built "network-ready" and pre-wired with Category 5 wiring, they are likely to have rooms or walls without available connectivity. HomePlug technology also eliminates some of the problems with wireless networking, allowing access points to be moved to more convenient locations in the home, reducing the need for multiple wireless access points.
Q: Has the HomePlug technology been thoroughly tested?
A: Members of the HomePlug alliance tested the technology in an extensive field trial of 500 homes throughout North America. Based on the success of this field trial, the completion of the HomePlug 1.0 Specification was announced in June 2001.
Q: Did the HomePlug technology disrupt electrical service during these field trials?
A: Simply put, HomePlug technology uses electrical outlets for network connection points, and the wire that connects these outlets for the transmission of data between connection points. The presence of the data signal on electrical lines has no effect on the electrical service in homes.
Q: What if I have older wiring in my home? Is there a difference in the performance of the technology when applied to newer homes versus older homes?
A: The field tests of the HomePlug technology showed that its performance is consistent, regardless of a home's age or size. The field tests also confirmed nearly 100 percent coverage in every home tested.
Q: What is the range in distance for Powerline?
Theoretically, powerline network will work up to 300 meters in length of power wire. The powerline device has also been tested in home exceeded 7000 square feet and had no problems communicating between nodes separated by the maximum distance. However, the data signals can't get through power transformers and the electrics wiring is not straight. The range in distance that you see will be lower than the theoretical value.
Q: How many pc's or laptops can I connect in one Powerline network?
Because of limited bandwidth and MAC protocol, we recommend the connected nodes should be less than 15 for safe performance.
Q: Is Powerline a shared bandwidth medium?
Individual devices using powerline communication use the electrical wiring like a hub in Ethernet networking. All connections share the available bandwidth.
Q: Will my data travel out onto the public power grid?
No, the transformer located outside your home will prevent your data signal from traveling out to the public power grid. Therefore, Powerline will keep your data local and secured.
Q: Can I plug Powerline into a surge protector, surge suppressor power strip, or UPS?
We recommend that you do not plug Powerline into a surge protector or a surge suppressor. Instead, plug it directly into an electric outlet. Therefore, plugging Powerline into a surge protector or a surge suppressor power strip is unnecessary.
Q: Do Powerline devices have any protections from damaging by power fluctuation?
Yes, they do. They have safety fuse inside.
Q: Is Powerline more secure than wireless?
Security is dependent upon access to the network and encryption. Regardless of the encryption method, Powerline network intruders have to be physically plugged in to a local outlet. Wireless network intruders need only be within the range of the wireless antenna (this may be some distance away). For this reason alone, powerline is more secure.
Q: How does the Powerline prevent 2 home powerline networks from infecting?
Powerline uses 56-bit DES security technology, assigning a unique network password for each network, to ensure network separation between home networks.
Q: Will Powerline damage my appliances or consumer electronics?
Powerline products transmit using very low voltages and do not damage other electronics.
Q: What happens if the powerline characteristics change during a communications session, like when other high power-consuming electrical appliance is turned on?
If the powerline characteristics degrade during a session, Powerline will sense the change and automatically adapt to provide the most reliable connection.
Q: What market opportunity does the HomePlug Alliance address?
A: By creating a single industry specification and certification program, the HomePlug alliance addresses the problems that have prohibited broad market penetration of power outlet connectivity in the home. The HomePlug technology leverages the ubiquity of the powerline to enable home networks and products.
Q: Do I really need a network in my home?
A: Chances are you already have a network in your home, you just don't call it that. If you have more than one phone, electricity in more than one place, or several units that connect together to make a home entertainment system, you've got a kind of "network".
The special thing about these new types of networks is that they can share digital data and send it at very high speeds between devices. For example, if you store your MP3 collection on your PC, HomePlug-compliant devices can allow you to send the data through the electrical wires in your home, so that you can access your entire MP3 collection from your big stereo. You can also connect to the Internet from anywhere in your home.
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