Abstract
Toward making the conventional carrier sense multiple access (CSMA) protocol transmit and control mobile ad hoc network systems, as well as reducing energy consumption, an adaptive multichannel multipriority two-dimensional probability detection and 1-stick joint control strategy carrier sense multiple access with variable collision duration and three-way handshake mechanisms (iCSMA for short) is proposed. Based on the conventional two-slot model of the CSMA protocol, iCSMA introduces a concept of collision duration (b), which divides the system’s timeslot into the duration of successful packet transmission (1 + a), the duration of collision (b + a), and the duration of the idle state (a) of the system. By employing iCSMA, the loss of the system could be reduced with a fine-tuned collision duration (b), which leads to improved performance compared to the conventional 1P-persistent CSMA protocol. Furthermore, a three-way handshake mechanism is introduced for monitoring the entire network system at a minimal cost of throughput. Toward a higher channel utilization rate, a multichannel and multipriority function is employed in the implementation of multiservice communication for the system. Besides, with an adaptive mechanism, the transmission probabilities p 1 and p 2 are reasonably set so that the system will not produce a complete collision under the condition of high load, and the throughput can also be stabilized. Based on the battery model, the lifetime of the system nodes (T) is extended. Both theoretical analysis and experimental results confirm the accuracy of the theoretical derivation.
Highlights
A mobile ad hoc network (MANET) refers to a wireless mobile node system that can freely and dynamically selforganize into arbitrary, temporary network topology and allow people and equipment to seamlessly network in areas without any preset communication infrastructure [1, 2]
In terms of the questions, an adaptive multichannel multipriority two-dimensional probability detection and 1stick joint control strategy carrier sense multiple access with variable collision duration and three-way handshake mechanisms (AMMJ-CSMA/RCAB) in mobile ad hoc networks is proposed in this paper
Based on the conventional 1-persistent CSMA protocol model and the two-dimensional probability CSMA protocol model, this paper proposes a three-slot model of 1-persistence and two-dimensional probability joint control under the variable collision duration and three-way handshake mechanism, as shown in Figure 3. e following assumptions about its mathematical model are first made: (i) e access methods of the system nodes are based on a random multiple access protocol that adheres to the joint control of 1P-CSMA and two-dimensional probability CSMA. e information packet arrival process of each station on the communication channel is independent and obeys the (0, 1) distribution
Summary
A mobile ad hoc network (MANET) refers to a wireless mobile node system that can freely and dynamically selforganize into arbitrary, temporary network topology and allow people and equipment to seamlessly network in areas without any preset communication infrastructure [1, 2]. At the same time, considering the different requirements of different video services, multipriority 1persistent CSMA random multiple access control protocol with variable collision length is proposed, which sets different priorities and competes fairly. In terms of the questions, an adaptive multichannel multipriority two-dimensional probability detection and 1stick joint control strategy carrier sense multiple access with variable collision duration and three-way handshake mechanisms (AMMJ-CSMA/RCAB) in mobile ad hoc networks is proposed in this paper. It controls the whole process of the system by controlling the collision length b and sending probabilities p1 and p2. It can be determined through simulation experiments that the lifetime of the system nodes has been significantly extended
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