Performance Analysis for Asynchronous Requests in Wireless Networks with Multiple Packet Reception Capability
| Autor: | Masanori Hamamura, Suwat Pattaramalai, Kittipong Warasup |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
business.product_category
Computer science Network packet business.industry Wireless network ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS Frame (networking) 020206 networking & telecommunications Throughput 02 engineering and technology Wireless access point Computer Science Applications Transmission (telecommunications) Asynchronous communication 0202 electrical engineering electronic engineering information engineering Wireless 020201 artificial intelligence & image processing Electrical and Electronic Engineering business Carrier sense multiple access with collision avoidance Computer network |
| Zdroj: | Wireless Personal Communications. 115:2671-2693 |
| ISSN: | 1572-834X 0929-6212 |
| DOI: | 10.1007/s11277-020-07210-8 |
| Popis: | An important key technology used in the new standard IEEE 802.11ax is a multiple-user multiple-input multiple-output (MU-MIMO) antenna technology. With MU-MIMO technology, a wireless access point (AP) can increase network throughput by simultaneously multiple packet reception (MPR) from wireless users. Using MPR capability, the new medium access control (MAC) protocol is proposed to allow wireless users transmitting packets at the same time and even when there is an ongoing transmission in the network. The new mechanism for transmission process allows users to transmit packets on two conditions; the time during first ongoing RTS frame transmission and the total ongoing users less than maximum MPR capability. In addition, the format of frame control is modified to identify the multiple packet transmission. For performance evaluation, the mathematical model is derived to calculate throughput and the probability of idle, success transmission, and collision of the network. Moreover, the results are validated by MATLAB program simulation. The results show that throughput obtained by the proposed protocol is about 40% higher than that obtained by the carrier sense multiple access with collision avoidance (CSMA/CA) protocol when the maximum MPR capability is two and the contention window size is sixty-four. Moreover, the probability of success transmission increases when the number of transmissions equals to the maximum MPR capability. Finally, to obtain high throughput, the contention window size should be optimized with the number of users and the maximum MPR capability. |
| Databáze: | OpenAIRE |
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