2014 IFIP Wireless Days (WD)最新文献

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On the performance of hybrid ARQ schemes for uplink information transmission with wireless power transfer in the downlink 研究了上行链路信息传输和下行链路无线功率传输的混合ARQ方案的性能
2014 IFIP Wireless Days (WD) Pub Date : 2014-11-01 DOI: 10.1109/WD.2014.7020804
Fernando Augusto de Witt, R. Souza, G. Brante
{"title":"On the performance of hybrid ARQ schemes for uplink information transmission with wireless power transfer in the downlink","authors":"Fernando Augusto de Witt, R. Souza, G. Brante","doi":"10.1109/WD.2014.7020804","DOIUrl":"https://doi.org/10.1109/WD.2014.7020804","url":null,"abstract":"We investigate a form of energy harvesting consisting of gathering energy from the radio frequency (RF) electromagnetic waves, also know as wireless power transfer. We employ a time switching (TS) protocol to coordinate the harvesting process, which separates a time slot into two parts, one devoted to wireless energy transfer and the other to wireless information transmission. The fraction of time devoted to each task, the TS parameter, has great impact on the overall performance. This paper presents an investigation on the usage of the TS protocol, including the numerical optimization of the TS parameter, when hybrid automatic retransmission (HARQ) schemes are used for information transmission. Our results demonstrate that HARQ schemes can improve the system performance for high SNR. This improvement is even better if if the destination applies Chase combining among the previously received copies of a frame.","PeriodicalId":311349,"journal":{"name":"2014 IFIP Wireless Days (WD)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114905524","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: 10
Enhanced connectivity for robust multimedia transmission in UAV networks 增强了无人机网络中鲁棒多媒体传输的连通性
2014 IFIP Wireless Days (WD) Pub Date : 2014-11-01 DOI: 10.1109/WD.2014.7020797
Rodrigo Costa, D. Rosário, E. Cerqueira, A. Santos
{"title":"Enhanced connectivity for robust multimedia transmission in UAV networks","authors":"Rodrigo Costa, D. Rosário, E. Cerqueira, A. Santos","doi":"10.1109/WD.2014.7020797","DOIUrl":"https://doi.org/10.1109/WD.2014.7020797","url":null,"abstract":"The usage of Unmanned Aerial Vehicle (UAV) networks has stimulated the development of new multimedia applications due to their high degree of mobility and versatility. Although the transmission of data on UAVs using geographic protocols enables better data delivery rate, it is not enough to provide quality of experience (QoE). This happens due to the high mobility degree of UAVs, occurring thus broken links during the transmission. Those broken links damage the connectivity and cause delays and packet loss. This paper proposes a mechanism, called ECORA, to enhance the routing decision making on geographic protocols, and thus improving the connectivity of UAV networks. ECORA takes into account the positioning prediction and link expiration time. In order to assess the gains with ECORA, it was added to the GPSR protocol and evaluated by simulation experiments. Results show that ECORA favored GPSR to obtain higher delivery packets and lower end-to-end delay, as well as better video quality delivered.","PeriodicalId":311349,"journal":{"name":"2014 IFIP Wireless Days (WD)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129951003","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: 7
DODEX+: A new network coding scheme for mesh networks in mobile cloud computing DODEX+:移动云计算中网状网络的一种新的网络编码方案
2014 IFIP Wireless Days (WD) Pub Date : 2014-11-01 DOI: 10.1109/WD.2014.7020796
T. Vu, T. Nguyen, G. Pujolle, N. Boukhatem
{"title":"DODEX+: A new network coding scheme for mesh networks in mobile cloud computing","authors":"T. Vu, T. Nguyen, G. Pujolle, N. Boukhatem","doi":"10.1109/WD.2014.7020796","DOIUrl":"https://doi.org/10.1109/WD.2014.7020796","url":null,"abstract":"Wireless access networks constitute an important part of mobile cloud computing. Using mesh networks is a promising solution to quickly provide connectivity infrastructure for cloud service access. While mesh networks can be easily set up, the wireless nature of the links interconnecting mesh routers compromises the network performances. Network coding is a new technique for capacity enhancement in wireless networks. In a previous work, we have defined DODEX as a network coding scheme. In this paper, we propose a new network coding scheme called DODEX+, which is an extension of DODEX, to improve the performances of wireless mesh networks. The novelty of DODEX+ is the re-encoding of coded packets with other codable flows to maximize the coding chances. The simulation results show interesting gains in throughput and number of coded packets.","PeriodicalId":311349,"journal":{"name":"2014 IFIP Wireless Days (WD)","volume":"148 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133266456","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
Enhanced multi-channel MAC protocol for multi-hop wireless sensor networks 多跳无线传感器网络的增强型多通道MAC协议
2014 IFIP Wireless Days (WD) Pub Date : 2014-11-01 DOI: 10.1109/WD.2014.7020815
Rana Diab, G. Chalhoub, M. Misson
{"title":"Enhanced multi-channel MAC protocol for multi-hop wireless sensor networks","authors":"Rana Diab, G. Chalhoub, M. Misson","doi":"10.1109/WD.2014.7020815","DOIUrl":"https://doi.org/10.1109/WD.2014.7020815","url":null,"abstract":"In this paper, we address the challenge of achieving high throughput with limited number of channels in a wireless sensor network (WSN). The use of multiple channels helps overcome, on one hand, interference generated from inner network activity, and on the other hand, interference caused by neighboring systems operating in the same frequency band. We propose a multi-channel MAC protocol with multi-interface nodes for WSNs. In our proposition, we enhance the channel allocation method of HMC-MAC in order to take into account a multi-interface sink and network segmentation into two groups of nodes. We evaluate our protocol using NS2 simulator with different number of available channels in order to emulate a limited number of interference-free channels. Results show that our MAC protocol improves the overall network performance compared to other protocols with limited number of channels and high data rate traffic.","PeriodicalId":311349,"journal":{"name":"2014 IFIP Wireless Days (WD)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114823991","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: 9
IEEE 802.15.6 based node and hub architectures for healthcare applications 用于医疗保健应用程序的基于IEEE 802.15.6的节点和集线器体系结构
2014 IFIP Wireless Days (WD) Pub Date : 2014-11-01 DOI: 10.1109/WD.2014.7020848
Hadda Ben Elhadj, S. Boudjit, L. Chaari, L. Kamoun
{"title":"IEEE 802.15.6 based node and hub architectures for healthcare applications","authors":"Hadda Ben Elhadj, S. Boudjit, L. Chaari, L. Kamoun","doi":"10.1109/WD.2014.7020848","DOIUrl":"https://doi.org/10.1109/WD.2014.7020848","url":null,"abstract":"Recent advances in electronics and integrated circuits have fostered the development of Wireless Body Area Networks (WBANs) as a key technology to provide ubiquitous healthcare monitoring services to patients. The specificities of the operating environment and treated data make WBANs unique compared to other networks. Consequently, IEEE 802 organization has established a Task Group called TG6 for the standardization of WBANs. The TG6 group has defined the IEEE 802.15.6 standard or precisely a Physical (PHY) and Medium Access Control (MAC) WBAN Layers. Also, the TG6 stated that two logical management entities that exchange network management information with the defined PHY and MAC layers as well as with other layers have to be designed. This paper presents a Node Management Entity (NME) and a Hub Management Entity (HME) architectures based on IEEE 802.15.6 standard. Our proposed HME and NME architectures combine cross and modular design architecture to ensure network reliability and enhance the WBAN Quality of Service (QoS).","PeriodicalId":311349,"journal":{"name":"2014 IFIP Wireless Days (WD)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117047791","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
Characteristic utilities, join policies and efficient incentives in Mobile Crowdsensing Systems 移动众测系统中的特色公用事业、联合政策和有效激励
2014 IFIP Wireless Days (WD) Pub Date : 2014-11-01 DOI: 10.1109/WD.2014.7020795
C. Angelopoulos, S. Nikoletseas, Theofanis P. Raptis, J. Rolim
{"title":"Characteristic utilities, join policies and efficient incentives in Mobile Crowdsensing Systems","authors":"C. Angelopoulos, S. Nikoletseas, Theofanis P. Raptis, J. Rolim","doi":"10.1109/WD.2014.7020795","DOIUrl":"https://doi.org/10.1109/WD.2014.7020795","url":null,"abstract":"In this paper we identify basic design issues of Mobile Crowdsensing Systems (MCS) and investigate some characteristic challenges. We define the basic components of an MCS - the Task, the Server and the Crowd - and investigate the functions describing/governing their interactions. We identify three qualitatively different types of Tasks; a) those whose added utility is proportional to the size of the Task, b) those whose added utility is proportional to the progress of the Task and c) those whose added utility is reversely proportional to the progress of the Task. For a given type of Task, and a finite Budget, the Server makes offers to the agents of the Crowd based on some Incentive Policy. On the other hand, each agent that receives an offer decides whether it will undertake the Task or not, based on the inferred cost (computed via a Cost function) and some Join Policy. In their policies, the Crowd and the Server take into account several aspects, such as the number and quality of participating agents, the progress of execution of the Task and possible network effects, present in real-life systems. We evaluate the impact and the performance of selected characteristic policies, for both the Crowd and the Server, in terms of Task execution and Budget efficiency of the Crowd. Experimental findings demonstrate key performance features of the various policies and indicate that some policies are more effective in enabling the Server to efficiently manage its Budget while providing satisfactory incentives to the Crowd and effectively executing the system Tasks. Interestingly, incentive policies that take into account the current crowd participation achieve a better trade-off between Task completion and budget expense.","PeriodicalId":311349,"journal":{"name":"2014 IFIP Wireless Days (WD)","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122903170","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: 17
Two-level downlink Resource Allocation Scheme based on cooperative game theory in LTE networks 基于合作博弈理论的LTE网络两级下行资源分配方案
2014 IFIP Wireless Days (WD) Pub Date : 2014-11-01 DOI: 10.1109/WD.2014.7020840
P. Ashidani, P. R. Guardieiro
{"title":"Two-level downlink Resource Allocation Scheme based on cooperative game theory in LTE networks","authors":"P. Ashidani, P. R. Guardieiro","doi":"10.1109/WD.2014.7020840","DOIUrl":"https://doi.org/10.1109/WD.2014.7020840","url":null,"abstract":"LTE (Long Term Evolution) networks support a wide range of voice, data and video services. LTE networks are designed to deliver high rates of transmission, low latency and higher spectral efficiency than the current generation of 3G networks. However, due to the limited radio resources, it is important to take advantage of these resources efficiently. This way, an appropriate strategy to resource allocation gains utmost importance for the requirements of QoS (Quality of Service) to be achieved. This paper proposes a Resource Allocation Scheme in two layers that combines game theory and the Proportional Fair Scheduler, aiming at improving performance and justice in the distribution of radio resources. The results of the study of the performance based on modeling and simulation are satisfactory.","PeriodicalId":311349,"journal":{"name":"2014 IFIP Wireless Days (WD)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122912944","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
Assisting V2V failure recovery using Device-to-Device communications 使用设备对设备通信协助V2V故障恢复
2014 IFIP Wireless Days (WD) Pub Date : 2014-11-01 DOI: 10.1109/WD.2014.7020846
Emad Abd-Elrahman, A. M. Said, Thouraya Toukabri, H. Afifi, M. Marot
{"title":"Assisting V2V failure recovery using Device-to-Device communications","authors":"Emad Abd-Elrahman, A. M. Said, Thouraya Toukabri, H. Afifi, M. Marot","doi":"10.1109/WD.2014.7020846","DOIUrl":"https://doi.org/10.1109/WD.2014.7020846","url":null,"abstract":"This paper aims to propose a new solution for failure recovery (dead-ends) in Vehicle to Vehicle (V2V) communications through LTE-assisted Device-to-Device communications (D2D). Based on the enhanced networking capabilities offered by Intelligent Transportation Systems (ITS) architecture, our solution can efficiently assist V2V communications in failure recovery situations. We also derive an analytical model to evaluate generic V2V routing recovery failures. Moreover, the proposed hybrid model is simulated and compared to the generic model under different constrains of worst and best cases of D2D discovery and communication. According to our comparison and simulation results, the hybrid model decreases the delay for alarm message propagation to the destination (typically the Traffic Control Center TCC) through the Road Side Unit (RSU).","PeriodicalId":311349,"journal":{"name":"2014 IFIP Wireless Days (WD)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121917971","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: 12
On the performance of network-coded cooperative communications with wireless energy transfer under a realistic power consumption model 基于实际功耗模型的无线能量传输网络编码协作通信性能研究
2014 IFIP Wireless Days (WD) Pub Date : 2014-11-01 DOI: 10.1109/WD.2014.7020805
G. Moritz, J. L. Rebelatto, R. Souza, B. Filho, Yonghui Li
{"title":"On the performance of network-coded cooperative communications with wireless energy transfer under a realistic power consumption model","authors":"G. Moritz, J. L. Rebelatto, R. Souza, B. Filho, Yonghui Li","doi":"10.1109/WD.2014.7020805","DOIUrl":"https://doi.org/10.1109/WD.2014.7020805","url":null,"abstract":"In this work we evaluate the outage probability of a network-coded cooperative system with wireless energy transfer when a realistic power consumption model is considered, which takes into account the energy consumed by the transceiver circuitry. Our results show that there exists a tradeoff between circuit and channel outage, as well as an optimal value for the ratio of the time allocated to energy harvesting that minimizes the overall outage probability.","PeriodicalId":311349,"journal":{"name":"2014 IFIP Wireless Days (WD)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116002928","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: 2
Joint power-delay minimization in 4G wireless networks 4G无线网络中的联合功率延迟最小化
2014 IFIP Wireless Days (WD) Pub Date : 2014-11-01 DOI: 10.1109/WD.2014.7020801
F. Moety, S. Lahoud, Bernard A. Cousin, K. Khawam
{"title":"Joint power-delay minimization in 4G wireless networks","authors":"F. Moety, S. Lahoud, Bernard A. Cousin, K. Khawam","doi":"10.1109/WD.2014.7020801","DOIUrl":"https://doi.org/10.1109/WD.2014.7020801","url":null,"abstract":"In this paper, we formulate an optimization problem that jointly minimizes the network power consumption and transmission delay in broadband wireless networks. Power saving is achieved by adjusting the operation mode of the network Base Stations (BSs) from high transmit power levels to low transmit levels or switched-off. Minimizing the transmission delay is achieved by selecting the best user association with the BSs. We study the case of a realistic Long Term Evolution (LTE) Network where the challenge is the high computational complexity necessary to obtain the optimal solution. Therefore, we propose a simulated annealing based heuristic algorithm for the power-delay minimization problem. The proposed heuristic aims to compute the transmit power level of the network BSs and associate users with these BSs in a way that jointly minimizes the total network power and the total network delay. The simulation results show that the proposed algorithm has a low computational complexity which makes it advantageous compared with the optimal scheme. Moreover, the heuristic algorithm performs close to optimally and outperforms the existing approaches in realistic 4G deployments.","PeriodicalId":311349,"journal":{"name":"2014 IFIP Wireless Days (WD)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121167726","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: 7
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