Multiple Devices timing out from wifi

I will use the grass method to describe my problem

G-Gist: I have a playbook, laptop, mac laptop, phone (with WiFi), 2 PCs, Xbox, and Wii and every time when I switch from device to device or I may be using too much bandwidth one device will connect out of WiFi.

R-Research: I have found that my neighbors WiFi could be interrupting my WiFi and causing havoc with my devices.

A-Analysis: I have a dir-615 Dlink router, when I am on my playbook or Xbox trying to connect to the internet via the WPA encryption password I always have to reset the router by unplug/plug it.

S-Solution: Sometimes, I have to go to my Dlink router and unplug and plug it back in to get some devices connected to the internet.

S-Statement: Does anyone have any alternative methods?

possible issue is the router can only support so many different devices to it at one time. You may need to log into the router from your PC and check the settings. you may be limited to say 5 devices at a time and when you try to hook another up it wont let it. or is having an ip conflict. when you reboot the router it re-assigns IP's to each device currently connected

you can try to set each device to a different IP so that when a new device sync's up the router assigns it its own IP instead of one of the defaults.

ex.
Linksys. your dlink may be a different base IP
192.168.1.XXX

so set each device like this
wii 192.168.1.100
xbox 192.168.1.101
phone 192.168.1.102

ETC

This will also allow you to set port forwarding for your xbox which sometimes is needed. if your NAT is strict or moderate instead of open.

I tried google, do you know any good links that can help me out?

Have you tried disabling Wireless N and using B/G only? Just a thought you could try out.

Have you tried upgrading or using an open source firmware (DD-WRT)? I read a few reviews from the product on newegg, and it seems there a quite a few people with the similar issues.

As you mentioned that your neighbor also uses a wireless connection, maybe you are just running on the same wavelength. Try going into the router adn changing the channel which is used to transmit from 11 or 9 (normally the standard channels for most routers) to a different number in the list.

Apart from that your best bet would be the suggestion from Pale-Dim.

I think the site portforward.com gives a good walk through for this type of change (Print out the walkthrough and your configuration before changing anything though as you can easily mess up if you blindly change settings on your router. The best bet is to do this with a PC which is directly connected to the router via LAN.

I had a similar problem on occasion and I too think it has to do with interference from neighbours routers (or other devices). At any rate, what seemed to work for me was to set the wireless to a fixed channel instead of "auto". I still had the problem once since then, but that's a lot better than every evening like it used to be.
If your router has the ability, you could try setting it to use the higher frequency band (5GigHz?) - there's usually fewer devices on that band