Service Integration Multiple Access (SIMA)
Apichan Kanjanavapastit, Hassan Mehrpour · 2003
We propose a wireless medium access control (MAC) protocol based on IEEE 802.11 called Service Integration Multiple Access (SIMA) for supporting voice and data transmissions over wireless local area networks (WLANs). This proposed protocol is a hybrid protocol between time division multiple access (TDMA) and carrier sense multiple access with collision avoidance (CSMA/CA). Since voice traffic generated by some standardized encoding schemes is classified as constant-bit-rate (CBR) traffic, we use TDMA protocol to support the transmission of the CBR voice traffic. On the other hand, CSMA/CA is still used to support the transmission of data traffic. The maximum number of voice calls in the same local area network when using various standardized voice encoding schemes is computed. In addition, the total transmission delay between terminals is discovered.