Modelling of local computer networks

Collision-Free Local Area Bus Network Performance Analysis

“…In this last respect, our schemes are in the same class as that of Mark [10,19]. Our use of the control wire path assists in the implementation of collision-free operation, but at an expense that is potentially less than the bit-vector approach of HXDP [7] or the address/priority manipulations required by BRAM [8], Spaniol [9], and Mark [10,19].…”

“…An interesting variation on the Ethernet access protocol has been proposed by Spaniol [9]. A slotted Ethernet is developed in which all ports must use a fixed-length packet slot P » T. Collisions may occur if more than one port attempts to transmit in an open slot.…”

“…The paper emphasizes properties of the algorithms and delay-throughput performance of the schemes. We also provide some comparisons to other available bus access techniques [6][7][8][9][10].…”

A simulation analysis of an updated version of the assigned-slot listen-before-transmission protocol

“…The related protocol which is the basis for this paper was proposed by Hansen and Schwartz (1977;1979). This protocol is called the Assigned-Slot Listen-Before-Transmission Protocol.…”

“…When the linear incremental algorithm was used, however, the Acknowledging Ethernet gave a noticeably better performance. An interesting scheme of dealing with collisions has been described and analyzed by Spaniol (1979). This scheme eliminates repeated collisions (i.e., a packet cannot collide more than once) by rescheduling the packets involved in the collision, using the TDMA (Time Division Multiple Access) scheme, immediately after seeing a collision.…”