Algorithm 3. Node type determination

//avg_rssi indicates the average of RSSIs //avr_snr indicates the average of SNRs 1:  At an Orphan node that receives k TCRs, k > 1: 2:    calculate avg_rssi and avg_snr with multiple TCRs; 3:    determine nodeType using avg_rssi and avg_snr as follows: 4:    if avg_rssi ≥ RSSI_Th1 and avg_snr ≥ SNR_Th1 then 5:       nodeType = 1HopR; 6:    else if avg_rssi ≥ RSSI_Th2 and avg_snr ≥ RSSI_Th2 then 7:       nodeType = 1Hop; 8:    else 9:       nodeType = 2HopCan;