The present invention is directed to novel 4-methylpyridopyrimidinone compounds of Formula ,and to salts thereof, their synthesis, and their use as inhibitors of phosphoinositide 3-kinase alpha. Each aggregation mechanism is configured to receive data from incoming ports and aggregate timing information for the incoming ports before determining where to route the data from outgoing ports. A barrier layer includes a first barrier driven during the first period and a second barrier driven during the second period. The transmitter performs a transmission processing on the transmission signals using the selected specified number of amplifiers and the antennas connected to the specified number of amplifiers, respectively.