Abstract
The wireless token ring protocol (WTRP) is a medium access control
(MAC) protocol for wireless networks in intelligent transportation
systems (ITS). It supports quality of service (QoS) in terms of bounded
latency and reserved bandwidth. The WTRP is efficient in the sense that
it reduces the number of re-transmissions due to collisions. It is fair
in the sense that each station takes a turn to transmit and is forced to
give up the right to transmit after transmitting for a specified amount
of time. It is a distributed protocol that supports many topologies
since not all stations need to be connected to each other or to a
central station. It can be used with an admission control agent for
bandwidth or latency reservations. The WTRP is robust against single
node failure. The WTRP is designed to recover gracefully from multiple
simultaneous faults. It has applications to inter-access-point
coordination in ITS dedicated short-range communication (DSRC) and to
safety-critical vehicle-to-vehicle networking
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