After my MBP goes to sleep it will not automatically reconnect to my WiFi. I can manually connect it and it stays connected until it goes to sleep again. Any ideas to correct this
Click on the WIFI icon on your toolbar. Select Open Network Preferences. On the next screen make sure your location at the top is set to Automatic. Select WIFI on the left and click Adanced at the bottom. On the next screen make sure there's a checkmark under Remember network this computer has joined. Then select your home network and remove it. Hit OK on all those screens to confirm your changes. Then go to Finder and hit Go/Utilities and run the Keychain app. In there search for your WIFI network name you have at home and delete the entry for it. Confirm it's deleted by "X" out of the search field and typing the name in there again. If it doesn't find it anymore, you're good to go. Reboot the laptop via the Apple menu icon and Restart. When it comes back up, reconnect to your WIFI by clicking on the WIFI icon on your toolbar and selecting the name of your WIFI network from the list. Enter your password for it (you will be asked for it since you deleted the keychain entry for it). See if this resolves your issues.
As a side note, if your D-Link router is revision is below a K1 revision number, you might want to try dropping the n band off on it and see if that fixes your connectivity issues, but just as a test.