"bouncing" LAN connectivity with wireless

I am setting up a LAN for my mom.

We have a cable modem, upstairs LAN for my dad's computers.
It has a wireless router.
My mom would like to be able to use her Macbook in her bedroom.
The Macbook can connect in some parts of the bedroom, but not all.

They have a spare cable outlet in their room.
Is there a device I can get to bounce connectivity it receives to nearby?
So, I can place it in the lounge and it bounces the connectivity to their bedroom?
Or should I simply get them a cable modem for their room?
I'd prefer an inexpensive solution.
Does a wireless router anywhere in the house act as a port for additional connectivity?
What are all my options?
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beavoidAsked:
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ElrondCTCommented:
Three options for you that come to mind:

1) If you have Ethernet wiring in the house, you could put a wireless access point in a different location in your house. An AP could be either specifically designed as an AP only, or could be a wireless router that has DHCP turned off, so that it's only used as a switch/AP. It wouldn't have to be specifically on the first floor; it might even work better on the second floor but closer to the side of the house that you want the signal to be. You'd have to experiment with locations to see what works well.

2) Use an 802.11n router, the latest and greatest version of wireless that has significantly expanded range. You may have to also get an 802.11n adapter for the Mac, depending on what model of Mac she has.

3) Get a wireless range extender. I've used the Linksys WRE54G; there are probably others out there. You can put it anywhere that there's a decent signal, and it rebroadcasts the signal for other devices to use.

I strongly discourage getting a separate cable modem. You'll be paying a second monthly subscription fee (you can't just plug in another modem without paying for it--their systems won't provide an Internet signal to a modem that's not registered), that within a very few months will cost you more than any of these hardware options. Even if you have to hire a technician to install it, you'll still pay it back in far less than a year.
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beavoidAuthor Commented:
Thanks
Signal rebroadcast is exactly what we need. So it's just the router plugged in to a power outlet, no cable?

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ElrondCTCommented:
A wireless range extender with no cable connection is different from a router. A router (in AP mode) or wireless access point needs an Ethernet cable connecting it to the main router; they're not designed to rebroadcast a signal. Some can operate in bridge mode where they take a wireless signal and you can then plug an Ethernet cable in between the AP and a computer, but that's a different situation from what you're describing; your mother would then have to be attached by Ethernet cable to the AP--and of course the AP would need to be somewhere that it can receive a solid signal.

The wireless range extender, on the other hand, just plugs into a power outlet, with no physical connection to the main router. So I think that's your simplest solution.
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beavoidAuthor Commented:
good
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