Cognitive Radio-Based Vehicular Ad Hoc and Sensor Networks
Current advancements in vehicular networking lead to amplifying the issue of spectrum scarcity. Cognitive radio (CR) has emerged as the key technology that enables flexible, efficient, and reliable spectrum exploiting by unlicensed networks to use licensed spectrum bands in an opportunistic manner t...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Hindawi - SAGE Publishing
2014-08-01
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| Series: | International Journal of Distributed Sensor Networks |
| Online Access: | https://doi.org/10.1155/2014/154193 |
| _version_ | 1797763460605411328 |
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| author | Mohammad Jalil Piran Yongwoo Cho Jihyeok Yun Amjad Ali Doug Young Suh |
| author_facet | Mohammad Jalil Piran Yongwoo Cho Jihyeok Yun Amjad Ali Doug Young Suh |
| author_sort | Mohammad Jalil Piran |
| collection | DOAJ |
| description | Current advancements in vehicular networking lead to amplifying the issue of spectrum scarcity. Cognitive radio (CR) has emerged as the key technology that enables flexible, efficient, and reliable spectrum exploiting by unlicensed networks to use licensed spectrum bands in an opportunistic manner to alleviate the spectrum scarcity issue. We have already proposed vehicular ad hoc and sensor networks (VASNET) as a new networking paradigm for vehicular communication by utilizing wireless sensor nodes in two mobile and stationary modes. The nodes are employed to sense vehicles' activity, for example, car crashes. Like other unlicensed networks, VASNET is supposed to operate over unlicensed spectrum bands. However, due to emergency nature of accident alarms in VASNET that must be received in minimum period of time and avoiding packet loss, in this paper we investigate CR-based VASNET, named as CR-VASNET. Various challenges and issues are discussed in details. In order to save stationary nodes' power and enlarge the network lifetime, an optimization technique for relay node selection is proposed. Furthermore, for primary users (PU) protection, an energy detection-based scheme is suggested to calculate the probability of PU arrival. Our theoretical discussions and simulation results proved the efficient functionality of the proposed CR-VASNET as a promising vehicular networking paradigm. |
| first_indexed | 2024-03-12T19:41:56Z |
| format | Article |
| id | doaj.art-05f5adab40bd4d1380f72764f7b7835b |
| institution | Directory Open Access Journal |
| issn | 1550-1477 |
| language | English |
| last_indexed | 2024-03-12T19:41:56Z |
| publishDate | 2014-08-01 |
| publisher | Hindawi - SAGE Publishing |
| record_format | Article |
| series | International Journal of Distributed Sensor Networks |
| spelling | doaj.art-05f5adab40bd4d1380f72764f7b7835b2023-08-02T03:45:09ZengHindawi - SAGE PublishingInternational Journal of Distributed Sensor Networks1550-14772014-08-011010.1155/2014/154193154193Cognitive Radio-Based Vehicular Ad Hoc and Sensor NetworksMohammad Jalil PiranYongwoo ChoJihyeok YunAmjad AliDoug Young SuhCurrent advancements in vehicular networking lead to amplifying the issue of spectrum scarcity. Cognitive radio (CR) has emerged as the key technology that enables flexible, efficient, and reliable spectrum exploiting by unlicensed networks to use licensed spectrum bands in an opportunistic manner to alleviate the spectrum scarcity issue. We have already proposed vehicular ad hoc and sensor networks (VASNET) as a new networking paradigm for vehicular communication by utilizing wireless sensor nodes in two mobile and stationary modes. The nodes are employed to sense vehicles' activity, for example, car crashes. Like other unlicensed networks, VASNET is supposed to operate over unlicensed spectrum bands. However, due to emergency nature of accident alarms in VASNET that must be received in minimum period of time and avoiding packet loss, in this paper we investigate CR-based VASNET, named as CR-VASNET. Various challenges and issues are discussed in details. In order to save stationary nodes' power and enlarge the network lifetime, an optimization technique for relay node selection is proposed. Furthermore, for primary users (PU) protection, an energy detection-based scheme is suggested to calculate the probability of PU arrival. Our theoretical discussions and simulation results proved the efficient functionality of the proposed CR-VASNET as a promising vehicular networking paradigm.https://doi.org/10.1155/2014/154193 |
| spellingShingle | Mohammad Jalil Piran Yongwoo Cho Jihyeok Yun Amjad Ali Doug Young Suh Cognitive Radio-Based Vehicular Ad Hoc and Sensor Networks International Journal of Distributed Sensor Networks |
| title | Cognitive Radio-Based Vehicular Ad Hoc and Sensor Networks |
| title_full | Cognitive Radio-Based Vehicular Ad Hoc and Sensor Networks |
| title_fullStr | Cognitive Radio-Based Vehicular Ad Hoc and Sensor Networks |
| title_full_unstemmed | Cognitive Radio-Based Vehicular Ad Hoc and Sensor Networks |
| title_short | Cognitive Radio-Based Vehicular Ad Hoc and Sensor Networks |
| title_sort | cognitive radio based vehicular ad hoc and sensor networks |
| url | https://doi.org/10.1155/2014/154193 |
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