Patent ID: 9178687
Filing Date: 2015-11-03
Classification: H04B,H04L,H04W,Y02D

Abstract:
1. A semiconductor device comprising: a hopping frequency decision unit selecting one frequency channel from among a plurality of frequency channels; a reception unit receiving packet data of the selected frequency channel, counting the number of receptions of packet data at the selected frequency channel; an error detection unit detecting a packet synchronization error and a synchronization detection error at the selected frequency channel, summing the number of packet synchronization errors and the number of synchronization detection errors; a controller calculating a packet error rate for each of the frequency channels based on the number obtained by summing the number of packet synchronization errors and the number of synchronization detection errors, and the number of receptions, evaluating a channel quality by using the packet error rate; and a transmission unit transmitting packet data by using the selected frequency channel.