Abstract—The purpose of this paper is to analyze the maximum
throughput when using RTS/CTS (Request To Send/Clear
To Send) in IEEE 802.11 Distributed Coordination Function
(DCF) multi-hop networks with a novel approach. Wireless
multi-hop networks, in which nodes communicate with each
other and convey packets via intermediate nodes without centralized
control, have gained increasing attention because of
the extension of the wireless communication range associated
with such networks. In wireless multi-hop networks, the IEEE
802.11 DCF based on the Carrier Sense Multiple Access with
Collision Avoidance (CSMA/CA) has been commonly used as
a Medium Access Control (MAC) protocol. IEEE 802.11 DCF
is specifically designed for single-hop wireless LANs, which
makes quantitative analyses of the contention behaviors occurring
at nodes in typical network topologies important. Although
several quantitative throughput analyses for wireless multi-hop
networks have been reported, few analyses have examined the
use of RTS/CTS in IEEE 802.11 DCF multi-hop networks. While
RTS/CTS is effective for avoiding packet collisions caused by
hidden terminals, an overhead problem occurs due to the increase
in the number of RTS/CTS control packets. As the number
of RTS/CTS control packets increases, the collisions between
RTS/CTS control packets occur more frequently. The analysis
of networks that use RTS/CTS has been considered difficult
because of the complex behaviors of RTS/CTS. The present
paper introduces a novel approach to the analysis of throughput
for networks that use RTS/CTS by considering one-way flow in
string multi-hop networks. The end-to-end network maximum
throughput is obtained by analyzing the maximum throughput of
bottleneck nodes. This analysis provides the transmission failure
probability considering not only RTS-RTS collisions but also the
influence of the Network Allocation Vector (NAV). A simulation
is carried out, and a comparison of the analytical and simulated
results validates the proposed analytical expressions.
Index Terms—IEEE 802.11 Distributed Coordination Function
(DCF), Request To Send/Clear To Send (RTS/CTS), Maximum
throughput analysis, bottleneck node
Abstract—The purpose of this paper is to analyze the maximumthroughput when using RTS/CTS (Request To Send/ClearTo Send) in IEEE 802.11 Distributed Coordination Function(DCF) multi-hop networks with a novel approach. Wirelessmulti-hop networks, in which nodes communicate with eachother and convey packets via intermediate nodes without centralizedcontrol, have gained increasing attention because ofthe extension of the wireless communication range associatedwith such networks. In wireless multi-hop networks, the IEEE802.11 DCF based on the Carrier Sense Multiple Access withCollision Avoidance (CSMA/CA) has been commonly used asa Medium Access Control (MAC) protocol. IEEE 802.11 DCFis specifically designed for single-hop wireless LANs, whichmakes quantitative analyses of the contention behaviors occurringat nodes in typical network topologies important. Althoughseveral quantitative throughput analyses for wireless multi-hopnetworks have been reported, few analyses have examined theuse of RTS/CTS in IEEE 802.11 DCF multi-hop networks. WhileRTS/CTS is effective for avoiding packet collisions caused byhidden terminals, an overhead problem occurs due to the increasein the number of RTS/CTS control packets. As the numberof RTS/CTS control packets increases, the collisions betweenRTS/CTS control packets occur more frequently. The analysisof networks that use RTS/CTS has been considered difficultbecause of the complex behaviors of RTS/CTS. The present
paper introduces a novel approach to the analysis of throughput
for networks that use RTS/CTS by considering one-way flow in
string multi-hop networks. The end-to-end network maximum
throughput is obtained by analyzing the maximum throughput of
bottleneck nodes. This analysis provides the transmission failure
probability considering not only RTS-RTS collisions but also the
influence of the Network Allocation Vector (NAV). A simulation
is carried out, and a comparison of the analytical and simulated
results validates the proposed analytical expressions.
Index Terms—IEEE 802.11 Distributed Coordination Function
(DCF), Request To Send/Clear To Send (RTS/CTS), Maximum
throughput analysis, bottleneck node
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