Abstract-In multihop packet radio networks with randomly distributed terminals, the optimal transmission radii to maximize the expected progress of packets in desired directions are determined with a variety of transmission protocols and network configurations. It is shown that the FM capture phenomenon with slotted ALOHA greatly improves the expected progress over the system without capture due to the more limited area of possibly interfering terminals around the receiver. The (mini)slotted nonpersistent carrier-sense-multiple-access (CSMA) only slightly outperforms ALOHA, unlike the single-hop case (where a large improvement is available), because of a large area of "hidden" terminals and the long vulnerable period generated by them. As an example of an inhomogeneous terminal distribution, the effect of a gap in an otherwise randomly distributed terminal population on the expected progress of packets crossing the gap is considered. In this case, the disadvantage of using a large transmission radius is demonstrated. 0
The article REF determined the optimal transmission range of slotted ALOHA and CSMA schemes which maximizes the expected one-hop progress of a packet while considering the tradeoff between the probability of successful transmission and the progress of the packet.
Optimal Transmission Ranges for.Randomly Distributed Packet Radio Terminals
IEEE Trans. Communications
IEEE Trans. Communications
Computer Science