05-03-2013, 02:48 PM
Internet Access via Cable TV network
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Abstract
Demand for the high-speed (or broad band) internet access for fast web browsing and more effective telecommuting. India has a cable penetration of 80 million homes, offering a vast network for leveraging the internet access. Cable TV has a strong reach to the homes and therefore offering the Internet through cable could be a scope for furthering the growth of internet usage in the homes. The cable is an alternative medium for delivering the Internet services in the US, there are already a million homes with cable modems, enabling the high-speed internet access over cable.
In India, we are in the initial stages. We are experiencing innumerable local problems in Mumbai, Bangalore and Delhi, along with an acute shortage of international Internet connectivity. Accessing the Internet on the public switched telephone networks (PSTN) still has a lot of problems. Such as drops outs its takes along time to download or upload large files one has to pay both for the Internet connectivity as well as for telephone usages during that period. Since it is technically possible to offer higher bandwidth by their cable, home as well as corporate users may make like it. Many people cannot afford a PC At their premises. Hardware obsolescence in the main problem to the home user who cannot afford to upgrade his PC every year and Cable TV based ISP solution s offer an economic alternative.
Introduction
Internet is a network of networks in which various computers connect each other throughout the world. The connection to other computers is possible with the help of ISP (Internet Service Provider). Each Internet users depend dialup connections to connect to Internet. This has many disadvantages like very poor speed, may time cut downs etc. Miraculous developments in telecommunication systems and information technology have created marvels for the new generation i.e. Internet using a phone line. Internets via phone connections are painfully slow, especially when downloading photographs, graphics, or video images and large files. To solve the problem, Internet data can be transferred through Cable networks wired to the user computer. The cable modem technology for the Internet provides an 'always on' feature for individuals to access the Internet rapidly, while its digital broadband network technology allows user to move around quickly.
Various advantages are High availability, High bandwidth to low cost, high speed data access, always on connectivity etc. The huge growth in the number of Internet users every year has resulted in the traffic congestion on the net, resulting in slower and expensive internet access .As cable TV has a strong reach to homes, it is the best medium for providing the internet to house-holds with faster access at feasible rates.
Network Setup:
A propose typical cable network is shown in below figure. It consists of Internet backbone connectivity from internal service protocol. It then goes to the router and to the switch. The switch connects to the server as well as the cable modem termination system (CMTS). The CMTS output goes to the up converter before finally being fed in to the cable network. Information will reach your doorstep, which is a great extended development of satellite technology and communication technology to help develop and design such type of networks to save the wealth of nation and its potential to parental organization to adopt such a technology. The kind of technology has been already. Existing in the US and UK for the last few years.
There are several methods for computer connection, but Ethernet 10 Base T is emerging as the most predominant method. Although it probably would be cheaper to produce the cable modem as an internal card for the computer, this would require different printed-circuit cards for different kinds of computers, and additionally would' make the demarcation between cable network and the customer’s computer too fuzzy.
Cable Modem
A "Cable Modem" is a device that allows high-speed access to the Internet via a cable TV (CATV) network.
The cable modem attaches to computer through an Ethernet Network Interface Card
It takes a signal from the computer and converts it for transmission over the cable network.
For Cable Internet access on PC, a Cable Modem is required at user’s end.
It has two connections; one to the TV cable wire and the other to a computer.
A Cable Modem sends and receives data to and from the Internet by using the existing coaxial cable network.
The modem translates cable signals the same way a telephone modem translates signals from a telephone line.
How fast is a Cable Modem?
Cable modem speeds vary widely depends on the cable modem system Cable network architecture Traffic load. In the downstream direction (from the network to the computer), network speeds can be up to 27 Mbps.
BUT, this is an aggregate amount of bandwidth that is shared by users. Few computers will be capable of connecting at such high speeds or have exclusive access to the network. A more realistic number is 1 to 3 Mbps.
In the upstream direction (from computer to network), speeds can be up to 10 Mbps. However, most modem producers have selected a more optimum speed between 500 Kbps and 2.5 Mbps. And many cable operators limit the upstream bandwidth to 128 or 384kbs.
An asymmetric cable modem scheme is most common. The downstream channel has a much higher.
Conclusion
Cable TV has a strong reach to the homes and therefore offering the Internet through cable be a scope for furthering the growth of internet usage in the homes.
The cable is an alternative medium for delivering the Internet Services in the US, there are a million homes with cable modems, enabling the high-speed internet access over cable.
[attachment=52657]
Abstract
Demand for the high-speed (or broad band) internet access for fast web browsing and more effective telecommuting. India has a cable penetration of 80 million homes, offering a vast network for leveraging the internet access. Cable TV has a strong reach to the homes and therefore offering the Internet through cable could be a scope for furthering the growth of internet usage in the homes. The cable is an alternative medium for delivering the Internet services in the US, there are already a million homes with cable modems, enabling the high-speed internet access over cable.
In India, we are in the initial stages. We are experiencing innumerable local problems in Mumbai, Bangalore and Delhi, along with an acute shortage of international Internet connectivity. Accessing the Internet on the public switched telephone networks (PSTN) still has a lot of problems. Such as drops outs its takes along time to download or upload large files one has to pay both for the Internet connectivity as well as for telephone usages during that period. Since it is technically possible to offer higher bandwidth by their cable, home as well as corporate users may make like it. Many people cannot afford a PC At their premises. Hardware obsolescence in the main problem to the home user who cannot afford to upgrade his PC every year and Cable TV based ISP solution s offer an economic alternative.
Introduction
Internet is a network of networks in which various computers connect each other throughout the world. The connection to other computers is possible with the help of ISP (Internet Service Provider). Each Internet users depend dialup connections to connect to Internet. This has many disadvantages like very poor speed, may time cut downs etc. Miraculous developments in telecommunication systems and information technology have created marvels for the new generation i.e. Internet using a phone line. Internets via phone connections are painfully slow, especially when downloading photographs, graphics, or video images and large files. To solve the problem, Internet data can be transferred through Cable networks wired to the user computer. The cable modem technology for the Internet provides an 'always on' feature for individuals to access the Internet rapidly, while its digital broadband network technology allows user to move around quickly.
Various advantages are High availability, High bandwidth to low cost, high speed data access, always on connectivity etc. The huge growth in the number of Internet users every year has resulted in the traffic congestion on the net, resulting in slower and expensive internet access .As cable TV has a strong reach to homes, it is the best medium for providing the internet to house-holds with faster access at feasible rates.
Network Setup:
A propose typical cable network is shown in below figure. It consists of Internet backbone connectivity from internal service protocol. It then goes to the router and to the switch. The switch connects to the server as well as the cable modem termination system (CMTS). The CMTS output goes to the up converter before finally being fed in to the cable network. Information will reach your doorstep, which is a great extended development of satellite technology and communication technology to help develop and design such type of networks to save the wealth of nation and its potential to parental organization to adopt such a technology. The kind of technology has been already. Existing in the US and UK for the last few years.
There are several methods for computer connection, but Ethernet 10 Base T is emerging as the most predominant method. Although it probably would be cheaper to produce the cable modem as an internal card for the computer, this would require different printed-circuit cards for different kinds of computers, and additionally would' make the demarcation between cable network and the customer’s computer too fuzzy.
Cable Modem
A "Cable Modem" is a device that allows high-speed access to the Internet via a cable TV (CATV) network.
The cable modem attaches to computer through an Ethernet Network Interface Card
It takes a signal from the computer and converts it for transmission over the cable network.
For Cable Internet access on PC, a Cable Modem is required at user’s end.
It has two connections; one to the TV cable wire and the other to a computer.
A Cable Modem sends and receives data to and from the Internet by using the existing coaxial cable network.
The modem translates cable signals the same way a telephone modem translates signals from a telephone line.
How fast is a Cable Modem?
Cable modem speeds vary widely depends on the cable modem system Cable network architecture Traffic load. In the downstream direction (from the network to the computer), network speeds can be up to 27 Mbps.
BUT, this is an aggregate amount of bandwidth that is shared by users. Few computers will be capable of connecting at such high speeds or have exclusive access to the network. A more realistic number is 1 to 3 Mbps.
In the upstream direction (from computer to network), speeds can be up to 10 Mbps. However, most modem producers have selected a more optimum speed between 500 Kbps and 2.5 Mbps. And many cable operators limit the upstream bandwidth to 128 or 384kbs.
An asymmetric cable modem scheme is most common. The downstream channel has a much higher.
Conclusion
Cable TV has a strong reach to the homes and therefore offering the Internet through cable be a scope for furthering the growth of internet usage in the homes.
The cable is an alternative medium for delivering the Internet Services in the US, there are a million homes with cable modems, enabling the high-speed internet access over cable.