Proceedings of the 6th International Workshop on Underwater Networks最新文献

Scheduled MAC in beacon overlay networks for underwater localization and time-synchronization 水下定位与时间同步的信标覆盖网络调度MAC

Proceedings of the 6th International Workshop on Underwater Networks Pub Date : 2011-12-01 DOI: 10.1145/2076569.2076575

W. V. Kleunen, N. Meratnia, P. Havinga

{"title":"Scheduled MAC in beacon overlay networks for underwater localization and time-synchronization","authors":"W. V. Kleunen, N. Meratnia, P. Havinga","doi":"10.1145/2076569.2076575","DOIUrl":"https://doi.org/10.1145/2076569.2076575","url":null,"abstract":"In this article we introduce a MAC protocol designed for underwater localization and time-synchronisation. The MAC protocol assumes a network of static reference nodes and allows blind nodes to be localized by listening-only to the beacon messages. Such a system is known to be very scalable. We show localization and time-synchronization algorithms can be designed for listen-only blind nodes by adapting the equations from GPS. We extend the set of GPS equations with angular information to reduce the number of beacons a blind node has to receive before it can determine its position. We evaluate scheduled and unscheduled communication for sending reference-beacon message using simulation mechanisms. Our experimental results show that when energy-consumption of the beacons is of concern or when the modulation rate is low (≤ 1kbps), scheduled communication is preferred. For systems which are not concerned with the energy-consumption of the beacons, unscheduled communication delivers more messages to the blind-nodes and localization and time-synchronization are performed faster in case of high modulation rates (5kbps and 10kbps).","PeriodicalId":428974,"journal":{"name":"Proceedings of the 6th International Workshop on Underwater Networks","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124878644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 11

Uncertainty-based localization solution for under-ice autonomous underwater vehicles 基于不确定性的冰下自主水下航行器定位方法

Proceedings of the 6th International Workshop on Underwater Networks Pub Date : 2011-12-01 DOI: 10.1145/2076569.2076583

Baozhi Chen, D. Pompili

引用次数: 1

Estimation and compensation of Doppler effect in UAC OFDM systems UAC OFDM系统中多普勒效应的估计与补偿

Proceedings of the 6th International Workshop on Underwater Networks Pub Date : 2011-12-01 DOI: 10.1145/2076569.2076585

Sadia Ahmed, H. Arslan

引用次数: 1

Scheduling granularity in underwater acoustic networks 水声网络的调度粒度

Proceedings of the 6th International Workshop on Underwater Networks Pub Date : 2011-12-01 DOI: 10.1145/2076569.2076576

Kurtis B. Kredo, P. Mohapatra

引用次数: 9

Jamming-resistant multi-path routing for reliable intruder detection in underwater networks 水下网络中抗干扰多路径路由的可靠入侵检测

Proceedings of the 6th International Workshop on Underwater Networks Pub Date : 2011-12-01 DOI: 10.1145/2076569.2076579

M. Goetz, S. Azad, P. Casari, I. Nissen, M. Zorzi

{"title":"Jamming-resistant multi-path routing for reliable intruder detection in underwater networks","authors":"M. Goetz, S. Azad, P. Casari, I. Nissen, M. Zorzi","doi":"10.1145/2076569.2076579","DOIUrl":"https://doi.org/10.1145/2076569.2076579","url":null,"abstract":"In this paper, we discuss the performance of multi-path routing techniques in underwater acoustic networks applied to an intruder detection scenario. We assume that a network of submarine sensors is deployed close to a surveilled harbor, with the task to detect outbound surface boats. The communications take place in the 4 to 8 kHz band, in order to favor long-haul transmissions. This band is highly affected by the noise originating from the boat propellers. Therefore, we resort to jamming-resilient techniques such as multi-path transmissions. The latter is accomplished by restricted flooding, and by an adaptive form of source routing as an alternative. Our results show that the inherent redundancy of multi-path routing offers an effective shield against excessive packet losses in the presence of strong jamming. This increases the probability that data packets containing detection information are promptly delivered to the desired sinks, with respect to the performance of static, single-path routing. In particular, restricted flooding achieves the best delivery ratio at the price of a very high number of generated replicas, whereas adaptive source routing trades off a lower delivery ratio for a lower overhead.","PeriodicalId":428974,"journal":{"name":"Proceedings of the 6th International Workshop on Underwater Networks","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116268837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 32

Impact analysis of different scheduling and retransmission techniques on an underwater routing protocol 不同调度和重传技术对水下路由协议的影响分析

Proceedings of the 6th International Workshop on Underwater Networks Pub Date : 2011-12-01 DOI: 10.1145/2076569.2076577

S. Climent, N. Meratnia, J. V. Capella

{"title":"Impact analysis of different scheduling and retransmission techniques on an underwater routing protocol","authors":"S. Climent, N. Meratnia, J. V. Capella","doi":"10.1145/2076569.2076577","DOIUrl":"https://doi.org/10.1145/2076569.2076577","url":null,"abstract":"Despite many advances in the area of Underwater Wireless Sensor Networks (UWSN) during the last years, still many challenges need to be successfully tackled before large-scale deployment of underwater sensor networks becomes a reality. UWSNs usually employ acoustic channels for communications, which compared with radio-frequency channels, allow much lower bandwidths and have longer propagation delays. In the past, different methods have been proposed to define how a node must acquire the channel in order to start a transmission. Given the large propagation delays of underwater communication channels, a TDMA-based approach may need big time-guards. On the other hand, the very same large propagation delay increases the occurrence of the hidden terminal problem in a CSMA-based approach. In this paper, impacts of utilization of different scheduling and retransmission techniques on an underwater routing protocol will be analyzed. This analysis, in which energy consumption, packet delay, number of duplicate packets, and packet loss are considered, will be carried out by means of simulation using the Network Simulator 3 and a subset of EDETA (Energy-efficient aDaptive hiErarchical and robusT Architecture) routing protocol recently adapted to UWSN.","PeriodicalId":428974,"journal":{"name":"Proceedings of the 6th International Workshop on Underwater Networks","volume":"299 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131414645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

A network coding based protocol for reliable data transfer in underwater acoustic sensor networks 基于网络编码的水声传感器网络可靠数据传输协议

Proceedings of the 6th International Workshop on Underwater Networks Pub Date : 2011-12-01 DOI: 10.1145/2076569.2076586

Funing Xing, Shaobin Cai, Zhen-guo Gao, Desen Yang

引用次数: 26

A low-power wake-up system for underwater wireless sensor modems 用于水下无线传感器调制解调器的低功耗唤醒系统

Proceedings of the 6th International Workshop on Underwater Networks Pub Date : 2011-12-01 DOI: 10.1145/2076569.2076589

Antonio Sánchez, S. Blanc, P. Yuste, Ignacio Piqueras-Salazar, J. J. Serrano

引用次数: 4

A study on the SPIHT image coding technique for underwater acoustic communications 用于水声通信的SPIHT图像编码技术研究

Proceedings of the 6th International Workshop on Underwater Networks Pub Date : 2011-12-01 DOI: 10.1145/2076569.2076578

B. Tomasi, L. Toni, P. Casari, J. Preisig, M. Zorzi

引用次数: 14

On the performance of unsynchronized distributed MAC protocols in deep water acoustic networks 深水水声网络中不同步分布式MAC协议的性能研究

Proceedings of the 6th International Workshop on Underwater Networks Pub Date : 2011-12-01 DOI: 10.1145/2076569.2076588

F. Favaro, S. Azad, P. Casari, M. Zorzi

{"title":"On the performance of unsynchronized distributed MAC protocols in deep water acoustic networks","authors":"F. Favaro, S. Azad, P. Casari, M. Zorzi","doi":"10.1145/2076569.2076588","DOIUrl":"https://doi.org/10.1145/2076569.2076588","url":null,"abstract":"Recent simulation software such as WOSS [1] and similar packages make it possible to perform accurate simulations of underwater acoustic networks by taking into account the actual behavior of sound propagation. In this paper, we focus on deep-water acoustic networks, and employ WOSS to compare the performance of three MAC protocols based on random access. The final goal of this effort is to test several network scenarios and baseline protocol approaches, and to understand which is more likely to offer top performance in underwater networks. In fact, it is still a partly open question whether or not there is a medium access control (MAC) protocol that is \"good\" in most if not all scenarios and network arrangements; or, at least, if any MAC protocol would be able to emerge as the de facto choice for most applications and network topologies. In this paper, we perform a comparison of MAC protocols in deep-water scenarios, in order to extend previous analyses, which targeted mainly shallow water networks. We will consider three types of medium access control: random access with instantaneous carrier sensing [1], transmitter-side tone-driven contention [2], and 3-way Request-To-Send/Clear-To-Send (RTS/CTS)-based access [3].","PeriodicalId":428974,"journal":{"name":"Proceedings of the 6th International Workshop on Underwater Networks","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126448322","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5