The Macbook Pro laptop line are Mac-based computers with the OS X operating system. The wireless networking capabilities of these computers are built in to the logic board. If your Macbook Pro's wireless signal is not strong enough, you can use several troubleshooting techniques to attempt to strengthen the signal and increase your wireless network speed. In some cases, the configuration of the wireless network is at fault instead of the Macbook Pro.
Position your Macbook Pro laptop, or the area where you commonly work at the Macbook Pro, so it is in as clear and direct a line of sight with your wireless router as possible. This may not be possible in all situations, but when you can do it, you remove any signal strength interference from objects between yourself and the wireless router.
Click the "Apple" icon on your system tray in the upper-left hand corner of your screen. Click "Software Update." Check each operating system available. Click "Install." Provide your administrator username and password if necessary.
Change your wireless network's channel. The channel is the band of wireless signal that the network is using to broadcast the Wi-Fi signal. If you have several wireless devices or other wireless networks nearby, your network's signal strength can be greatly reduced, resulting in issues on your Macbook Pro.
Upgrade your wireless network router firmware. The signal strength may correspond to the firmware on the router, which may not be up-to-date. You can also upgrade the router entirely to a newer model, or to an Apple Airport.
Power cycle your router. Power cycling involves disconnecting the router's power, waiting for 30 seconds, and plugging the router in.