Performance Analysis of QoS-Oriented OFDMA Protocol Based on IEEE 802.11ax for Cognitive Radio Network
To improve the quality of service (QoS) on the internet of medical things, a cognitive radio (CR) protocol based on orthogonal frequency division multiple access (OFDMA) is proposed, named CR-OFDMA. In this protocol, we divide a complete channel into multiple orthogonal subchannels and enhance the s...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-06-01
|
| Series: | Applied Sciences |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-3417/13/12/7163 |
| _version_ | 1797596216105631744 |
|---|---|
| author | Suoping Li Hailing Yang Ruiman Gao Tongtong Jia Hongli Li |
| author_facet | Suoping Li Hailing Yang Ruiman Gao Tongtong Jia Hongli Li |
| author_sort | Suoping Li |
| collection | DOAJ |
| description | To improve the quality of service (QoS) on the internet of medical things, a cognitive radio (CR) protocol based on orthogonal frequency division multiple access (OFDMA) is proposed, named CR-OFDMA. In this protocol, we divide a complete channel into multiple orthogonal subchannels and enhance the subchannel assignment scheme, which achieves QoS improvement under consideration of priority and fairness. Furthermore, we improve spectrum resource utilization by fully utilizing the remaining subchannels, feedback slots, and backoff slots. Then, a two-dimensional Markov model is established to describe the dynamic characteristics of the protocol operation, where the backoff stage and the backoff counter value constitute the system state. By establishing the traffic conservation equations for the system operation, the transmission probability and collision probability are calculated, and expressions of system throughput, channel utilization, and fairness index are derived. Finally, numerical results validate the advantages of CR-OFDMA. |
| first_indexed | 2024-03-11T02:48:26Z |
| format | Article |
| id | doaj.art-1a1620b295cf4fcea9b753d91b2a4436 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-11T02:48:26Z |
| publishDate | 2023-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-1a1620b295cf4fcea9b753d91b2a44362023-11-18T09:10:00ZengMDPI AGApplied Sciences2076-34172023-06-011312716310.3390/app13127163Performance Analysis of QoS-Oriented OFDMA Protocol Based on IEEE 802.11ax for Cognitive Radio NetworkSuoping Li0Hailing Yang1Ruiman Gao2Tongtong Jia3Hongli Li4School of Sciences, Lanzhou University of Technology, Lanzhou 730050, ChinaSchool of Sciences, Lanzhou University of Technology, Lanzhou 730050, ChinaSchool of Sciences, Lanzhou University of Technology, Lanzhou 730050, ChinaSchool of Sciences, Lanzhou University of Technology, Lanzhou 730050, ChinaSchool of Sciences, Lanzhou University of Technology, Lanzhou 730050, ChinaTo improve the quality of service (QoS) on the internet of medical things, a cognitive radio (CR) protocol based on orthogonal frequency division multiple access (OFDMA) is proposed, named CR-OFDMA. In this protocol, we divide a complete channel into multiple orthogonal subchannels and enhance the subchannel assignment scheme, which achieves QoS improvement under consideration of priority and fairness. Furthermore, we improve spectrum resource utilization by fully utilizing the remaining subchannels, feedback slots, and backoff slots. Then, a two-dimensional Markov model is established to describe the dynamic characteristics of the protocol operation, where the backoff stage and the backoff counter value constitute the system state. By establishing the traffic conservation equations for the system operation, the transmission probability and collision probability are calculated, and expressions of system throughput, channel utilization, and fairness index are derived. Finally, numerical results validate the advantages of CR-OFDMA.https://www.mdpi.com/2076-3417/13/12/7163cognitive radioorthogonal frequency division multiple accessquality of servicetwo-dimensional Markov chain |
| spellingShingle | Suoping Li Hailing Yang Ruiman Gao Tongtong Jia Hongli Li Performance Analysis of QoS-Oriented OFDMA Protocol Based on IEEE 802.11ax for Cognitive Radio Network Applied Sciences cognitive radio orthogonal frequency division multiple access quality of service two-dimensional Markov chain |
| title | Performance Analysis of QoS-Oriented OFDMA Protocol Based on IEEE 802.11ax for Cognitive Radio Network |
| title_full | Performance Analysis of QoS-Oriented OFDMA Protocol Based on IEEE 802.11ax for Cognitive Radio Network |
| title_fullStr | Performance Analysis of QoS-Oriented OFDMA Protocol Based on IEEE 802.11ax for Cognitive Radio Network |
| title_full_unstemmed | Performance Analysis of QoS-Oriented OFDMA Protocol Based on IEEE 802.11ax for Cognitive Radio Network |
| title_short | Performance Analysis of QoS-Oriented OFDMA Protocol Based on IEEE 802.11ax for Cognitive Radio Network |
| title_sort | performance analysis of qos oriented ofdma protocol based on ieee 802 11ax for cognitive radio network |
| topic | cognitive radio orthogonal frequency division multiple access quality of service two-dimensional Markov chain |
| url | https://www.mdpi.com/2076-3417/13/12/7163 |
| work_keys_str_mv | AT suopingli performanceanalysisofqosorientedofdmaprotocolbasedonieee80211axforcognitiveradionetwork AT hailingyang performanceanalysisofqosorientedofdmaprotocolbasedonieee80211axforcognitiveradionetwork AT ruimangao performanceanalysisofqosorientedofdmaprotocolbasedonieee80211axforcognitiveradionetwork AT tongtongjia performanceanalysisofqosorientedofdmaprotocolbasedonieee80211axforcognitiveradionetwork AT honglili performanceanalysisofqosorientedofdmaprotocolbasedonieee80211axforcognitiveradionetwork |