{"title":"Utilization efficient game-theoretical handover scheme for macro-femtocell networks","authors":"Qiaozhi Hua, Yuwei Su, Takuro Sato, Keping Yu","doi":"10.1109/WPMC.2017.8301877","DOIUrl":"https://doi.org/10.1109/WPMC.2017.8301877","url":null,"abstract":"The Macro-Femtocell system is widely used in current society because the cooperation between Macrocell base stations and Femtocell base stations can improve the communication capacity of certain areas and adapt to the large multi-user demand. To increase the system's communication quality, the handover scheme should be utilized when the user is moving within the limited coverage of Femtocell base stations. Generally, the Markov decision strategy is used for mobile users in the process of handover. However, the Markov decision process can't ensure the maximum utilization balance of Macrocell base stations and Femtocell base stations. In this case, users often choose the base station offering the highest signal strength, which will cause a Macrocell base station's load to be too large and Femtocell base stations to be idle, so the system's utilization is very low. To address this problem, we propose the utilization efficient game-theoretical handover scheme based on Starckberg competition theory for appropriately increasing a Femtocell base station's transmitting power. This can ensure the communication quality of the system and guarantees the system's load balance to induce users to take the initiative in processing the handover scheme. Finally, the simulation results show that our strategy is effective in choosing the best base station to receive the highest signal strength by predicting the user's movement. It could also realize the load balance of the antenna in the system. The overall transmission quality of the user group is optimized.","PeriodicalId":239243,"journal":{"name":"2017 20th International Symposium on Wireless Personal Multimedia Communications (WPMC)","volume":"190 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133216539","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}
{"title":"A distributed-and-interactive reporting scheme for collective-sensing in multi-band wireless LAN system","authors":"R. Teng, K. Yano, T. Kumagai","doi":"10.1109/WPMC.2017.8301799","DOIUrl":"https://doi.org/10.1109/WPMC.2017.8301799","url":null,"abstract":"Multi-band wireless local area network (WLAN) allows WLAN to adaptively select and jointly use wireless channels in multiple frequency bands to improve spectral efficiency. Monitoring of multi-band wireless resources is a significant and challenging issue for multi-band WLAN. Traditional methods of sensing by access point (AP) for each basic service set (BSS) of multi-cell WLAN incurs constraints of sensing capacity as well as the spatial and spectral coverage, especially for multi-band WLAN. We consider a resource monitoring system that employs collective sensing for each BSS via multi-RF stations (STAs). Distributed and collective sensing at each BSS alleviates the constraints of AP based sensing. Meanwhile, the STA based sensing for a BSS leads to a large sensing-report overhead. In this paper, we especially address the problem of potential large spectrum consumption caused by the sensing reports from a collective of sensing entities of STAs in multi-band WLAN. We propose a distributed-and-interactive scheme to efficiently report sensing results, such as channel occupancy ratio (COR) from sensing entities. The sensing results are collected at the AP in each BSS in a WLAN. The evaluation results show that the proposed scheme leads to a very small number of reports to obtain the necessary sensing results, even for a WLAN that has a large number of sensing entities.","PeriodicalId":239243,"journal":{"name":"2017 20th International Symposium on Wireless Personal Multimedia Communications (WPMC)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133516295","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}
Takumi Kobayashi, Satoshi Seimiya, Kouhei Harada, Masaki Noi, Zane Barker, G. Woodward, A. Willig, R. Kohno
{"title":"Wireless technologies to assist search and localization of victims of wide-scale natural disasters by unmanned aerial vehicles","authors":"Takumi Kobayashi, Satoshi Seimiya, Kouhei Harada, Masaki Noi, Zane Barker, G. Woodward, A. Willig, R. Kohno","doi":"10.1109/WPMC.2017.8301846","DOIUrl":"https://doi.org/10.1109/WPMC.2017.8301846","url":null,"abstract":"When natural disasters are occurred, a lot of injured victims should be found and have medical treatment as soon as possible. However, looking for the victims is not easy due to destroyed infrastructures. In order to solve the problems, authors have been proposed several solutions by using multiple unmanned aerial vehicles (UAVs) and dependable wireless communication technology. As a dependable wireless communication, ultra-wide band (UWB) radio which is known as a physical layer (PHY) of wireless body area network (WBAN) is used in this research. UWB radio can realize an accurate localization system which can be used indoor based on high resolution time difference detection of arrival time. Our proposal consists of several steps. At first, geo-location of multiple UAVs are estimated by global navigation satellite system (GNSS) such as global positioning system (GPS). Secondly, one of the multiple drones moves towards to destination in order to expand position estimation coverage area. When a victim who has UWB device is found, anchor nodes on multiple UAVs estimate the position of the victim. In addition, UWB sensor node which is owned by the victim can get vital-sign of the victim and transmit that with position information to rescue team via UAVs. This paper provides the latest results of theoretical analysis and experiments that performed by using actual UAVs and UWB localization system.","PeriodicalId":239243,"journal":{"name":"2017 20th International Symposium on Wireless Personal Multimedia Communications (WPMC)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115207621","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}
{"title":"Investigation about the paging resource allocation in NB-IoT","authors":"Jiahui Liu, Qin Mu, L. Liu, Lan Chen","doi":"10.1109/WPMC.2017.8301831","DOIUrl":"https://doi.org/10.1109/WPMC.2017.8301831","url":null,"abstract":"Internet of things (IoT) is a way of connecting everything around us together, which would be widely applied in the 5G era. Narrow band IoT (NB-IoT) is one of the solutions introduced from 3rd Generation Partner Project (3GPP) Release-13 to fulfill this concept. Massive-connection and narrow band operation are two key features of NB-IoT. With current NB-IoT design, certain resources within narrow band are dedicated for transmitting paging information of massive connections. This leads to overload of the dedicated resources, and consequently increased padding bits and low resource efficiency. Moreover, UE power consumption would also rise due to the extra effort to decode larger packets. To solve above problems, a new resource allocation method is proposed, which includes a new definition of paging resource set and corresponding resource selection method. Link level simulation is conducted to show the benefit of our proposals. It is observed that approximately power consumption could be saved by 80% and the resource efficiency could be improved by 30.5% by utilizing our proposed methods.","PeriodicalId":239243,"journal":{"name":"2017 20th International Symposium on Wireless Personal Multimedia Communications (WPMC)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124657674","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}
Antonio Montejo, Alberto S. Banacia, H. Sawada, K. Ishizu, Kazuo Ibuka, F. Kojima
{"title":"Implementation of a multi-hop network at the university campus using an IEEE 802.11af-compliant Network","authors":"Antonio Montejo, Alberto S. Banacia, H. Sawada, K. Ishizu, Kazuo Ibuka, F. Kojima","doi":"10.1109/WPMC.2017.8301803","DOIUrl":"https://doi.org/10.1109/WPMC.2017.8301803","url":null,"abstract":"Information dissemination is a major problem during calamities as road networks, power lines, and communication infrastructures were damaged. The aforementioned challenge contributes to an inefficient and sluggish rescue and relief operations as miscommunication between the government, ground personnel and victims arise. Establishing a communication link in the TV White Space (TVWS) has been popular after numerous studies have shown the inefficient utilization of the TV bands. More TV spectrum was made available by the analog to digital switchover of TV broadcast which in the Philippines began in 2009. Results of the studies conducted in the Philippines showed availability of 46% to 62% TVWS in an urban area while 60% to 80% in rural area. TVWS has better propagation characteristics as compared to the ordinary Wi-Fi systems operating at 2.4 GHz and 5 GHz ISM band. In this study, the feasibility of a multi-hop network based on IEEE 802.11af standard as an alternative communication infrastructure was implemented and evaluated. Multi-hop implementation was viewed as a necessary approach to re-route the radio link around the presence of high obstruction and to increase coverage area. Adjacent, co-channel and intermodulation issue were experienced and addressed in this experiment. Results show that the deployed network attained a maximum throughput of 4.81 Mbps for uplink and 4.93 Mbps for downlink over 600 m using a single channel centered at 593 MHz. Its quality of service is seriously affected by rain with an observed drop in throughput by 17.76% although there was hardly a change in the measured RSSI. The system was able to successfully support voice and data transmission via Skype.","PeriodicalId":239243,"journal":{"name":"2017 20th International Symposium on Wireless Personal Multimedia Communications (WPMC)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130729936","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}
Ahmad Shokair, M. Crussiére, J. Hélard, Y. Nasser, O. Bazzi
{"title":"Mobile TV directed resource allocation scheme for LTE networks","authors":"Ahmad Shokair, M. Crussiére, J. Hélard, Y. Nasser, O. Bazzi","doi":"10.1109/WPMC.2017.8301816","DOIUrl":"https://doi.org/10.1109/WPMC.2017.8301816","url":null,"abstract":"Resource allocation in LTE networks has attracted extensive research efforts. However, linear services (such as Digital TV programs) have been barely considered from the resource allocation perspectives. Indeed, when a linear service is offered to the end-users, the network should satisfy the maximum number of users served rather than maximizing the sum rate capacity. In this paper, The linear services oriented resource allocation strategy is discussed. This approach aims at maximizing the users' success rate, based on a minimum required quality of service (QoS) measured in terms of minimum throughput. Here, the focus will particularly on both Poisson Process and grid models as well their comparison. The method was tested in different scenarios and under different conditions to prove its robustness against user density, user requirements and reuse factor.","PeriodicalId":239243,"journal":{"name":"2017 20th International Symposium on Wireless Personal Multimedia Communications (WPMC)","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126042739","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}
{"title":"Load balancing scheme for data center based on SDN","authors":"Hongyan Cui, Linfei Yang, Tao Yu, Yajun Fang, Honggang Zhang, Zong-Guo Xia","doi":"10.1109/WPMC.2017.8301843","DOIUrl":"https://doi.org/10.1109/WPMC.2017.8301843","url":null,"abstract":"In data center, because of the large amount of user access, it usually takes the deployment of many server cluster to meet the needs of the vast numbers of users' access. How to decide a scheme to share the traffic of users to different servers becomes an important indicator of the overall quality of service in this scenario. In order to reduce costs and provide high-quality and reliable service, the load balancing technology is usually used in enterprises. At present, the industry generally uses LVS and other open source software or commercial load balancing device based on traditional network to complete this feature. However, due to the high cost of existing load balancing equipment, as well as the inherent shortcomings of traditional Internet, these solutions are lack of flexibility, and user's experience is not friendly enough. This paper proposed a load balancing scheme in data center based on SDN, that can implement an efficient dynamic scheduling according to the server status, using the feature of programmability in OpenFlow network, to balance different applications and complete the rational use of data center server cluster in a scenario that user request changes drastically. We also realized an equilibrium model for different applications. In addition, this paper also uses the Mininet network simulation tool to design the experiment scene, and completes the verification of the scheme.","PeriodicalId":239243,"journal":{"name":"2017 20th International Symposium on Wireless Personal Multimedia Communications (WPMC)","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126287014","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}
{"title":"Cyclostationary spectrum sensing based channel estimation using complex exponential basis expansion model in cognitive vehicular networks","authors":"Xia Liu, Zhimin Zeng, Caili Guo","doi":"10.1109/WPMC.2017.8301802","DOIUrl":"https://doi.org/10.1109/WPMC.2017.8301802","url":null,"abstract":"Cyclostationarity sensing methods are appealing for spectrum sensing due to its strong robustness to noise uncertainty. However, in cognitive vehicular networks, the Doppler frequency shift induced by high mobility cognitive vehicle will bring the cyclic frequency offset (CFO) for cyclostationarity spectrum sensing. The CFO can cause significant detection performance degradation because of a difference between cyclic frequency aware of the cognitive vehicle and the actual cyclic frequency of primary signal. To address this issue, cyclostationary spectrum sensing based on channel estimation using complex exponential basis expansion model (CE-BEM) is established in this paper. We firstly establish a Doppler frequency shift estimation method based on in-vehicle information. Then an appropriate CE-BEM is given according to the value of Doppler frequency shift estimation. The cyclostationarity spectrum sensing based on CE-BEM model for single user and cooperative users are provided. Theoretical analysis show that new cyclostationary characteristics are produced on account of the cyclostationarity induced by the CE-BEM. Simulation results demonstrate that both the local cyclostationarity spectrum sensing (LCSS) and the cooperative cyclostationarity spectrum sensing (CCSS) provide substantial improvement on detection performance in the dynamic moving speed environment for cognitive vehicles.","PeriodicalId":239243,"journal":{"name":"2017 20th International Symposium on Wireless Personal Multimedia Communications (WPMC)","volume":"43 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114010731","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}
Toshinori Kagawa, F. Ono, Lin Shan, K. Takizawa, R. Miura, Huan-Bang Li, F. Kojima, Shin Kato
{"title":"A study on latency-guaranteed multi-hop wireless communication system for control of robots and drones","authors":"Toshinori Kagawa, F. Ono, Lin Shan, K. Takizawa, R. Miura, Huan-Bang Li, F. Kojima, Shin Kato","doi":"10.1109/WPMC.2017.8301849","DOIUrl":"https://doi.org/10.1109/WPMC.2017.8301849","url":null,"abstract":"Robots, including unmanned aerial vehicles, or drones, are the hot research topics aiming at application to disaster response, infrastructure inspection, logistics, etc. Wireless LAN in 2.4GHz band is used for control link of many robots because of cost performance and device availability. However, the wireless LAN protocol is not suitable for the remote control of robots, particularly in the multi-hop network for beyond-line-of-sight (BLOS) operation, because of unstable and large transmission latency and interference problems. In this research, we have developed a latency-guaranteed multi-hop wireless communication system specialized for remote control and telemetry link of robots and drones, which need the BLOS operation. This paper presents the design and performance of prototype system obtained in field test.","PeriodicalId":239243,"journal":{"name":"2017 20th International Symposium on Wireless Personal Multimedia Communications (WPMC)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129996158","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}
Koji Saito, Takumi Kobayashi, C. Sugimoto, R. Kohno
{"title":"Routing algorithm considering nodes residual power to prolong ad-hoc network lifetime","authors":"Koji Saito, Takumi Kobayashi, C. Sugimoto, R. Kohno","doi":"10.1109/WPMC.2017.8301848","DOIUrl":"https://doi.org/10.1109/WPMC.2017.8301848","url":null,"abstract":"Ad hoc networks can work without existing infrastructures by using multi-hop transmission techniques. This can be useful for disaster area communication. When using mobile terminals as relay nodes, one of the problems is that if some relay nodes run out of batteries, the resulting network will consist of separate parts unable to communicate with each other. We focused on routing protocol to solve this disruption of service problem in the entire network, as many researches often do not consider the quality of the whole network. In this study, we first dene a network lifetime to evaluate service in the entire network, and propose routing algorithms considering residual electric power of each node. This way we can select routes to avoid using low residual electric power nodes. Our results show that the methods we use can prolong network lifetime compared to conventional AODV routing protocol.","PeriodicalId":239243,"journal":{"name":"2017 20th International Symposium on Wireless Personal Multimedia Communications (WPMC)","volume":"158 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124437948","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}