Investigation on Mutual Contention Bandwidth Request Mechanisms in Two-Hop Relay Network with ITU-R Path Loss Models

Table 3

Comparison of contention based bandwidth request mechanisms under various ITU-R pathloss models.

Types	Suburban fixed			Vehicular model			Outdoor to indoor and pedestrian
	Connection delay (s)	Queuing delay (s)	Throughput (kbps)	Connection delay (s)	Queuing delay (s)	Throughput (kbps)	Connection delay (s)	Queuing delay (s)	Throughput (kbps)
Message-message (MM)	0.02425	0.01090	251.67	0.07760	0.03660	61.50	0.3367	0.07233	603.33
Message-code (MC)	0.02205	0.00971	281.67	0.06940	0.03376	63.83	0.1042	0.0555	805.00
Code-message (CM)	0.02863	0.01372	266.67	0.07720	0.03900	57.83	0.1550	0.09117	520.00
Code-code (CC)	0.02345	0.01062	272.50	0.05420	0.02250	66.50	0.1492	0.06333	716.67