Pub Date : 2021-12-14DOI: 10.1109/wpmc52694.2021.9700473
Hongrui Nie, S. Li, Y. Liu
In this paper, we investigate the downlink wireless multi-connectivity Ad Hoc network. We model the network where the node locations follow a poisson point process and derive the coverage probability and channel capacity performance based on stochastic geometry. From our analysis, we show how the performance of wireless multi-connectivity Ad Hoc networks can be enhanced by adjusting the number of connections, the number of connected nodes and the density of nodes. Moreover, the simulation results verify the numeric analysis and show the upper bound and lower bound of channel capacity with special cases. It also unveils that rather than implementing multi-connectivity for all nodes, the network operators should consider such as coverage probability and end-to-end delay network performance which can benefit from the optimal scheme the most.
{"title":"Coverage Probability and Channel Capacity Analysis of Wireless Multi-connectivity Ad Hoc Networks","authors":"Hongrui Nie, S. Li, Y. Liu","doi":"10.1109/wpmc52694.2021.9700473","DOIUrl":"https://doi.org/10.1109/wpmc52694.2021.9700473","url":null,"abstract":"In this paper, we investigate the downlink wireless multi-connectivity Ad Hoc network. We model the network where the node locations follow a poisson point process and derive the coverage probability and channel capacity performance based on stochastic geometry. From our analysis, we show how the performance of wireless multi-connectivity Ad Hoc networks can be enhanced by adjusting the number of connections, the number of connected nodes and the density of nodes. Moreover, the simulation results verify the numeric analysis and show the upper bound and lower bound of channel capacity with special cases. It also unveils that rather than implementing multi-connectivity for all nodes, the network operators should consider such as coverage probability and end-to-end delay network performance which can benefit from the optimal scheme the most.","PeriodicalId":299827,"journal":{"name":"2021 24th International Symposium on Wireless Personal Multimedia Communications (WPMC)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114278120","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}
With continuous emergence of the new mobile applications, multi-access edge computing (MEC) is generally regarded as a promising technology to enable the computing-intensive and delay-sensitive services at the mobile devices by pushing more computing resources to the network edge. However, computation offloading, which has been a hot topic for MEC networks, is still facing the challenges due to the diversified task characteristics of the new mobile applications and the multidimensional resource conditions of the MEC networks. In this paper, we take the time-dependent logic characteristics of the tasks into consideration and propose a more flexible computation offloading and task scheduling strategy based on the multi-connectivity technology to further minimize the MEC network cost. We model our problem as a multi-objective optimization problem and propose a genetic algorithm-based flexible computation offloading and task scheduling algorithm (GA-FCOTS) to search for the optimal solution iteratively. Simulation results verify the convergence of the proposed algorithm, and show that the proposed algorithm can balance multiple performances and reduce the network cost effectively compared with the other baseline schemes.
{"title":"Dependency-Aware Flexible Computation Offloading and Task Scheduling for Multi-access Edge Computing Networks","authors":"Yang Sun, Huixin Li, Tingting Wei, Yanhua Zhang, Zhuwei Wang, Wenjun Wu, Chao Fang","doi":"10.1109/wpmc52694.2021.9700432","DOIUrl":"https://doi.org/10.1109/wpmc52694.2021.9700432","url":null,"abstract":"With continuous emergence of the new mobile applications, multi-access edge computing (MEC) is generally regarded as a promising technology to enable the computing-intensive and delay-sensitive services at the mobile devices by pushing more computing resources to the network edge. However, computation offloading, which has been a hot topic for MEC networks, is still facing the challenges due to the diversified task characteristics of the new mobile applications and the multidimensional resource conditions of the MEC networks. In this paper, we take the time-dependent logic characteristics of the tasks into consideration and propose a more flexible computation offloading and task scheduling strategy based on the multi-connectivity technology to further minimize the MEC network cost. We model our problem as a multi-objective optimization problem and propose a genetic algorithm-based flexible computation offloading and task scheduling algorithm (GA-FCOTS) to search for the optimal solution iteratively. Simulation results verify the convergence of the proposed algorithm, and show that the proposed algorithm can balance multiple performances and reduce the network cost effectively compared with the other baseline schemes.","PeriodicalId":299827,"journal":{"name":"2021 24th International Symposium on Wireless Personal Multimedia Communications (WPMC)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114548009","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}
Pub Date : 2021-12-14DOI: 10.1109/wpmc52694.2021.9700471
Kazune Yokoo, Y. Kozawa, T. Sawa
Recently, Underwater Visible Light Communication (UVLC) has been attracting attention as a short-range underwater wireless communication technology within the range of 100 m. UVLC enables high-speed communication mainly using photodiodes (PD) but requires precise alignment of the optical axis between the transmitter and receiver. In this paper, we investigate the UVLC using image sensors (IS) to establish a more stable communication link easily. Furthermore, focusing on the change of attenuation rate in the visible light band due to the effect of turbidity, chlorophyll concentration, in the underwater transmission channel, we propose an IS-based UVLC using RGBLEDs as the transmitting light, and theoretically evaluate the effect of turbidity in the sea. Specifically, when the chlorophyll concentration is low and high, the lowest attenuation wavelengths are of blue and red respectively. In this paper, we consider image sensor-based UVLC using RGB-LEDs and evaluate how water turbidity affects the transmission light. Also, we evaluate theoretically the effect of turbidity in the sea on the optical RGB signal using a general full-color camera taking into account underwater channel, general convex lens characteristics, and bayer color filter and analog to digital converters (DAC) at CMOS image sensor
{"title":"Theoretical analysis of received optical intensity of underwater image sensor based visible light communications using RGB-LEDs","authors":"Kazune Yokoo, Y. Kozawa, T. Sawa","doi":"10.1109/wpmc52694.2021.9700471","DOIUrl":"https://doi.org/10.1109/wpmc52694.2021.9700471","url":null,"abstract":"Recently, Underwater Visible Light Communication (UVLC) has been attracting attention as a short-range underwater wireless communication technology within the range of 100 m. UVLC enables high-speed communication mainly using photodiodes (PD) but requires precise alignment of the optical axis between the transmitter and receiver. In this paper, we investigate the UVLC using image sensors (IS) to establish a more stable communication link easily. Furthermore, focusing on the change of attenuation rate in the visible light band due to the effect of turbidity, chlorophyll concentration, in the underwater transmission channel, we propose an IS-based UVLC using RGBLEDs as the transmitting light, and theoretically evaluate the effect of turbidity in the sea. Specifically, when the chlorophyll concentration is low and high, the lowest attenuation wavelengths are of blue and red respectively. In this paper, we consider image sensor-based UVLC using RGB-LEDs and evaluate how water turbidity affects the transmission light. Also, we evaluate theoretically the effect of turbidity in the sea on the optical RGB signal using a general full-color camera taking into account underwater channel, general convex lens characteristics, and bayer color filter and analog to digital converters (DAC) at CMOS image sensor","PeriodicalId":299827,"journal":{"name":"2021 24th International Symposium on Wireless Personal Multimedia Communications (WPMC)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128217396","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}
Pub Date : 2021-12-14DOI: 10.1109/wpmc52694.2021.9700441
So Hasegawa, Yoshito Watanabe, M. Hasegawa, Y. Shoji
This paper proposes a technique for pre-negotiation of transfer data for a millimeter-wave (mmW) Store-Carry-Forwarding (SCF) data transfer network called the Piggy-back network between autonomous mobile robots. Each robot has its own database on this network, and the purpose is to synchronize the entire network when a part of the data is updated from time to time. While mmW communication is capable of high-speed and large-capacity data communication, the communication range is short and the communication time is extremely limited when the robots are moving. In order to make the best use of communication time and transfer data, it is appropriate to decide in advance which data to receive or transmit. Therefore, by using medium-speed communication, which has a relatively large communication range, and exchanging meta information of each data before the robots approach each other, it is decided which data should be handled. This paper models the difference and update check of data managed in segments for data synchronization as the Multi Armed Bandit (MAB) problem, which is a bandit problem and propose a Tug-of-War (TOW) dynamics-based data query scheme, which is a MAB algorithm. In order to verify the effectiveness of the proposed method, some simulations are performed on the data hit rate, which means the detection rate of update data with a limited number of queries in the situation where the update data occurs randomly. The results show that when the data consists of 10 segments and there is a large bias in the update frequency of each data, the data query method using TOW achieves detection of updated data up to about 40% higher than the random query method.
{"title":"Piggy-back Network to Enable Beyond 5G Society Supported by Autonomous Mobilities: Application of MAB Algorithm for Data Synchronization Between Distributed Collaborative Robots","authors":"So Hasegawa, Yoshito Watanabe, M. Hasegawa, Y. Shoji","doi":"10.1109/wpmc52694.2021.9700441","DOIUrl":"https://doi.org/10.1109/wpmc52694.2021.9700441","url":null,"abstract":"This paper proposes a technique for pre-negotiation of transfer data for a millimeter-wave (mmW) Store-Carry-Forwarding (SCF) data transfer network called the Piggy-back network between autonomous mobile robots. Each robot has its own database on this network, and the purpose is to synchronize the entire network when a part of the data is updated from time to time. While mmW communication is capable of high-speed and large-capacity data communication, the communication range is short and the communication time is extremely limited when the robots are moving. In order to make the best use of communication time and transfer data, it is appropriate to decide in advance which data to receive or transmit. Therefore, by using medium-speed communication, which has a relatively large communication range, and exchanging meta information of each data before the robots approach each other, it is decided which data should be handled. This paper models the difference and update check of data managed in segments for data synchronization as the Multi Armed Bandit (MAB) problem, which is a bandit problem and propose a Tug-of-War (TOW) dynamics-based data query scheme, which is a MAB algorithm. In order to verify the effectiveness of the proposed method, some simulations are performed on the data hit rate, which means the detection rate of update data with a limited number of queries in the situation where the update data occurs randomly. The results show that when the data consists of 10 segments and there is a large bias in the update frequency of each data, the data query method using TOW achieves detection of updated data up to about 40% higher than the random query method.","PeriodicalId":299827,"journal":{"name":"2021 24th International Symposium on Wireless Personal Multimedia Communications (WPMC)","volume":"26 9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116290489","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}
Pub Date : 2021-12-14DOI: 10.1109/wpmc52694.2021.9700455
H. Sawada, Hikaru Kawasaki, Azril Haniz, Kazuo Ibuka, T. Matsumura, F. Kojima, Kotaro Ikeda, Kensuke Matsui, Takuto Kurose, Yasuyuki Yanagi, Tadahide Kunitachi
In order to install 920 MHz band wireless communication systems into a factory environment, radio propagation measurement has been conducted in the operating factory. TX and RX antennas were set up at fixed locations where wireless communication devices are expected to be installed, and long-term fluctuations of received power were measured. Also, the received power along the communication path from a station to an auto guided vehicle is measured for mobile devices. By analyzing the probability distribution of the received power, the applicable statistical distribution models for fixed and mobile stations are examined.
{"title":"Analysis of 920 MHz Band Received Power Fluctuation in a Factory Environment","authors":"H. Sawada, Hikaru Kawasaki, Azril Haniz, Kazuo Ibuka, T. Matsumura, F. Kojima, Kotaro Ikeda, Kensuke Matsui, Takuto Kurose, Yasuyuki Yanagi, Tadahide Kunitachi","doi":"10.1109/wpmc52694.2021.9700455","DOIUrl":"https://doi.org/10.1109/wpmc52694.2021.9700455","url":null,"abstract":"In order to install 920 MHz band wireless communication systems into a factory environment, radio propagation measurement has been conducted in the operating factory. TX and RX antennas were set up at fixed locations where wireless communication devices are expected to be installed, and long-term fluctuations of received power were measured. Also, the received power along the communication path from a station to an auto guided vehicle is measured for mobile devices. By analyzing the probability distribution of the received power, the applicable statistical distribution models for fixed and mobile stations are examined.","PeriodicalId":299827,"journal":{"name":"2021 24th International Symposium on Wireless Personal Multimedia Communications (WPMC)","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128035240","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}
Pub Date : 2021-12-14DOI: 10.1109/wpmc52694.2021.9700413
F. Kojima
This paper proposes a flexible data frame forwarding scheme that effectively works to achieve advanced data exchange services in the future IoT systems in Beyond 5th Generation (5G)/6th Generation (6G) era. The proposed scheme employs a recommended practice of IEEE 802.15.10 specifications that were standardized for an effective control via Layer 2 Routing (L2R) in the IEEE 802.15.4 personal area network systems and conducts data frame replication and concatenation functions according to the diversified demands on the assumed IoT services. The proposed scheme is also expected to become one of candidate technologies that is equipped in the future IoT testbed structure in order to evaluate the future complicated and diversified services. In this paper, performances of the proposed scheme are evaluated via the fundamental computer simulations and the field experiments deploying the developed L2R radio devices. Consequently, it is confirmed that the proposed scheme can improve the data exchange performances among massive IoT devices by improving the performance of frame success rate about 40% from the conventional L2R operations.
{"title":"A Flexible Frame Forwarding Scheme by Data Replication and Concatenation Functions Evaluated in the IoT Testbed Foundation for the Wireless Grid","authors":"F. Kojima","doi":"10.1109/wpmc52694.2021.9700413","DOIUrl":"https://doi.org/10.1109/wpmc52694.2021.9700413","url":null,"abstract":"This paper proposes a flexible data frame forwarding scheme that effectively works to achieve advanced data exchange services in the future IoT systems in Beyond 5th Generation (5G)/6th Generation (6G) era. The proposed scheme employs a recommended practice of IEEE 802.15.10 specifications that were standardized for an effective control via Layer 2 Routing (L2R) in the IEEE 802.15.4 personal area network systems and conducts data frame replication and concatenation functions according to the diversified demands on the assumed IoT services. The proposed scheme is also expected to become one of candidate technologies that is equipped in the future IoT testbed structure in order to evaluate the future complicated and diversified services. In this paper, performances of the proposed scheme are evaluated via the fundamental computer simulations and the field experiments deploying the developed L2R radio devices. Consequently, it is confirmed that the proposed scheme can improve the data exchange performances among massive IoT devices by improving the performance of frame success rate about 40% from the conventional L2R operations.","PeriodicalId":299827,"journal":{"name":"2021 24th International Symposium on Wireless Personal Multimedia Communications (WPMC)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133159138","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}
Pub Date : 2021-12-14DOI: 10.1109/wpmc52694.2021.9700458
L. Hu, Zhizhong Zhang, Bingguang Deng, W. Zhou
In satellite communication, to solve the problem that it is impossible to deploy ground base stations in some special scenarios to realize normal communication, this paper introduces Unmanned Aerial Vehicles (UAV) as relay base stations in Low Earth Orbit (LEO) satellite communication system to construct space-air-ground integrated communication link, and proposes a Three-Dimensional Multiple Input Multiple Output (3D MIMO) channel model based on regular geometry. In this model, a hemispherical model is used to describe the distribution of terminal scatterers. Since the elevation and azimuth angles of the scatterers in the hemispherical model are combined, the effective scatterer distribution is represented by the von Mises Fisher (VMF) function. The statistical properties such as the local Space-Time Correlation Function (S-TCF), Doppler Power Spectral Density (DPSD), Level Crossing Rate (LCR), and Average Fading Duration (AFD) of the channel model are deduced, and the influencing factors of the channel properties are studied and analyzed. The results show that the UAV’s moving direction, antenna direction, and initial angle all affect the statistical properties of the model. The simulation results verify the accuracy of the model, and the second-order statistical properties confirm the effectiveness of the model. The proposed model expands the research and application of the satellite communication channel model.
{"title":"Channel Modeling for UAV-Aided LEO Satellite Communication","authors":"L. Hu, Zhizhong Zhang, Bingguang Deng, W. Zhou","doi":"10.1109/wpmc52694.2021.9700458","DOIUrl":"https://doi.org/10.1109/wpmc52694.2021.9700458","url":null,"abstract":"In satellite communication, to solve the problem that it is impossible to deploy ground base stations in some special scenarios to realize normal communication, this paper introduces Unmanned Aerial Vehicles (UAV) as relay base stations in Low Earth Orbit (LEO) satellite communication system to construct space-air-ground integrated communication link, and proposes a Three-Dimensional Multiple Input Multiple Output (3D MIMO) channel model based on regular geometry. In this model, a hemispherical model is used to describe the distribution of terminal scatterers. Since the elevation and azimuth angles of the scatterers in the hemispherical model are combined, the effective scatterer distribution is represented by the von Mises Fisher (VMF) function. The statistical properties such as the local Space-Time Correlation Function (S-TCF), Doppler Power Spectral Density (DPSD), Level Crossing Rate (LCR), and Average Fading Duration (AFD) of the channel model are deduced, and the influencing factors of the channel properties are studied and analyzed. The results show that the UAV’s moving direction, antenna direction, and initial angle all affect the statistical properties of the model. The simulation results verify the accuracy of the model, and the second-order statistical properties confirm the effectiveness of the model. The proposed model expands the research and application of the satellite communication channel model.","PeriodicalId":299827,"journal":{"name":"2021 24th International Symposium on Wireless Personal Multimedia Communications (WPMC)","volume":"217 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115616199","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}
Pub Date : 2021-12-14DOI: 10.1109/wpmc52694.2021.9700469
J. Vargas, C. Thienot, X. Lagrange
Mission Critical Communication (MCC) Services are currently provided through secure and reliable Professional Mobile Radio (PMR) dedicated networks. These services include voice, data and video delivery. During an emergency, timely access to video streaming can increase situational awareness and enhance life-saving operations. Therefore, to improve the capabilities of PMR networks and benefit from the advantages of mutualization, standard cellular technologies based on 4G and 5G were adopted for MCC. In particular, the evolved Multimedia Broadcast Multicast Service (eMBMS) is suitable for the transmission of group communication services. There are two broadcast transmission modes proposed in eMBMS: Multicast Broadcast Single Frequency Network (MBSFN) and Single-Cell Point-to-Multipoint (SC-PTM). In this paper, we compare MBSFN, SC-PTM and Unicast (UC) in Mission Critical (MC) scenarios from a resource use perspective. More precisely, we calculate the system spectral efficiency in each mode and estimate the number of users per square kilometer demanding the same MC service from which MBSFN and SC-PTM become more efficient than UC. Results show that SC-PTM is the best solution for locally restricted and small-scale emergencies while MBSFN is more suitable for emergencies during massive events or wide-area scenarios.
{"title":"Comparison of MBSFN, SC-PTM and Unicast for Mission Critical Communication","authors":"J. Vargas, C. Thienot, X. Lagrange","doi":"10.1109/wpmc52694.2021.9700469","DOIUrl":"https://doi.org/10.1109/wpmc52694.2021.9700469","url":null,"abstract":"Mission Critical Communication (MCC) Services are currently provided through secure and reliable Professional Mobile Radio (PMR) dedicated networks. These services include voice, data and video delivery. During an emergency, timely access to video streaming can increase situational awareness and enhance life-saving operations. Therefore, to improve the capabilities of PMR networks and benefit from the advantages of mutualization, standard cellular technologies based on 4G and 5G were adopted for MCC. In particular, the evolved Multimedia Broadcast Multicast Service (eMBMS) is suitable for the transmission of group communication services. There are two broadcast transmission modes proposed in eMBMS: Multicast Broadcast Single Frequency Network (MBSFN) and Single-Cell Point-to-Multipoint (SC-PTM). In this paper, we compare MBSFN, SC-PTM and Unicast (UC) in Mission Critical (MC) scenarios from a resource use perspective. More precisely, we calculate the system spectral efficiency in each mode and estimate the number of users per square kilometer demanding the same MC service from which MBSFN and SC-PTM become more efficient than UC. Results show that SC-PTM is the best solution for locally restricted and small-scale emergencies while MBSFN is more suitable for emergencies during massive events or wide-area scenarios.","PeriodicalId":299827,"journal":{"name":"2021 24th International Symposium on Wireless Personal Multimedia Communications (WPMC)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129926647","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}
Pub Date : 2021-12-14DOI: 10.1109/wpmc52694.2021.9700448
T. Miyachi, Kunio Akashi, Tomoya Inoue, Yota Ishida, Ryosuke Miura, Shinsuke Miwa, F. Kojima, H. Harai
Services premised on wireless communication are diversifying, and their reliability of the communication is required. On the other hand, many factors are involved in the parameter change of the wireless section, and it is difficult to clearly determine the cause and effect when the wireless section is actually incorporated into the evaluation environment. By emulating the wireless section and fixing the quality of the wireless section, the behavior of the implementation of a specific wireless service can be efficiently evaluated. We have been developing StarBED, which is a large-scale network testbed built with wired networks, and NETorium, which enables application evaluation by imitating a wireless section on a wired network on a large scale. We are designing and prototyping supporting software that can flexibly introduce new functions as an alternative to the supporting software SpringOS that has been operated on StarBED. This paper describes the design of architecture and implementation of the supporting software when the wireless emulation function is realized as an additional function.
{"title":"Extensions for Wireless Technology Emulation to Wire-based Network Testbed","authors":"T. Miyachi, Kunio Akashi, Tomoya Inoue, Yota Ishida, Ryosuke Miura, Shinsuke Miwa, F. Kojima, H. Harai","doi":"10.1109/wpmc52694.2021.9700448","DOIUrl":"https://doi.org/10.1109/wpmc52694.2021.9700448","url":null,"abstract":"Services premised on wireless communication are diversifying, and their reliability of the communication is required. On the other hand, many factors are involved in the parameter change of the wireless section, and it is difficult to clearly determine the cause and effect when the wireless section is actually incorporated into the evaluation environment. By emulating the wireless section and fixing the quality of the wireless section, the behavior of the implementation of a specific wireless service can be efficiently evaluated. We have been developing StarBED, which is a large-scale network testbed built with wired networks, and NETorium, which enables application evaluation by imitating a wireless section on a wired network on a large scale. We are designing and prototyping supporting software that can flexibly introduce new functions as an alternative to the supporting software SpringOS that has been operated on StarBED. This paper describes the design of architecture and implementation of the supporting software when the wireless emulation function is realized as an additional function.","PeriodicalId":299827,"journal":{"name":"2021 24th International Symposium on Wireless Personal Multimedia Communications (WPMC)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130803918","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}
Pub Date : 2021-12-14DOI: 10.1109/wpmc52694.2021.9700422
T. Sawa, Y. Kozawa, Shinpei Goto, T. Takeuchi, T. Shibagaki
Image sensor communication using LEDs and cameras is expected as effective and easy wireless communication method in the water. In this research, R-CNN is tried for recognition of 2D LEDs array. The R-CNN could recognize QR code and Bayer pattern in the air correctly, though SURF could not detect Bayer. 3 different arrangement of underwater LED arrays are tried to be recognized by R-CNN. In spite of attenuation of light in the water and color deterioration near camera resolution, green LEDs of Bayer arrangement was recognized at the distance of 16 m.
{"title":"Recognition of 2D LEDs array pattern for underwater image sensor communication by R-CNN","authors":"T. Sawa, Y. Kozawa, Shinpei Goto, T. Takeuchi, T. Shibagaki","doi":"10.1109/wpmc52694.2021.9700422","DOIUrl":"https://doi.org/10.1109/wpmc52694.2021.9700422","url":null,"abstract":"Image sensor communication using LEDs and cameras is expected as effective and easy wireless communication method in the water. In this research, R-CNN is tried for recognition of 2D LEDs array. The R-CNN could recognize QR code and Bayer pattern in the air correctly, though SURF could not detect Bayer. 3 different arrangement of underwater LED arrays are tried to be recognized by R-CNN. In spite of attenuation of light in the water and color deterioration near camera resolution, green LEDs of Bayer arrangement was recognized at the distance of 16 m.","PeriodicalId":299827,"journal":{"name":"2021 24th International Symposium on Wireless Personal Multimedia Communications (WPMC)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116633593","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}
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