Random and Frequent Disconnection on Game Servers, even with Strong Wi-Fi Connection

In Minecraft Pocket Edition v. 0.4.0, I am frequently disconnected from the Minecraft server at random times. By random, I mean that the amount of time I'm on the server before I'm disconnected usually varies. This problem occurs even if I'm playing Minecraft with my brother less than 5 feet from each other and connected to the same Wi-Fi Connection Point. This problem occurs every time I join his server and every time I'm forced to quit and re-join the server. He quit the server as well, and that did not fix the problem. If possible, please fix this problem in Pocket Edition v. 0.5.0. Thanks!