Pub Date : 2018-08-01DOI: 10.1109/ISWCS.2018.8491062
Patrick Agostini, Z. Utkovski, Jens Pilz, S. Stańczak
Massive connectivity for massive machine-type communications (mMTC) is key enabler for many 5G and Intternet-of-Things (IoT) applications. In mMTC scenarios, a large number of low-complexity, low-rate devices transmit sporadically over shared scarce communication resources. Reliability and low-latency with short packet transmissions are major design criteria that require integration of novel network architecture solutions and multiple access methods. This study addresses the challenge of massive connectivity in the context of a Cloud Radio Access Network (C-RAN), characterized by a hierarchical structure in which part of the processing functionalities of the Radio Units (RUs) are migrated to a centralized cloud processor or Central Unit (CU). A major architectural constraint of C-RANs is imposed by capacity-limited fronthaul links connecting the RUs with the CU. In this study, the performance of a transmission scheme for massive connectivity is investigated under this architectural constraint. In particular, a non-coherent, grant-free transmission scheme is proposed where the encoding is performed based on a Gabor frame structure. The fronthaul processing is a particular instance of Detect-and-Forward (DtF), where local detection at the RUs is performed using a one-step thresholding procedure, and the local estimates are then merged at the central processor via the capacity-limited fronthaul links. Numerical results illustrate the potential of the proposed scheme to support massive, reliable random access with short messages.
{"title":"Scalable Massive Random Access in C- RAN with Fronthaul Limitations","authors":"Patrick Agostini, Z. Utkovski, Jens Pilz, S. Stańczak","doi":"10.1109/ISWCS.2018.8491062","DOIUrl":"https://doi.org/10.1109/ISWCS.2018.8491062","url":null,"abstract":"Massive connectivity for massive machine-type communications (mMTC) is key enabler for many 5G and Intternet-of-Things (IoT) applications. In mMTC scenarios, a large number of low-complexity, low-rate devices transmit sporadically over shared scarce communication resources. Reliability and low-latency with short packet transmissions are major design criteria that require integration of novel network architecture solutions and multiple access methods. This study addresses the challenge of massive connectivity in the context of a Cloud Radio Access Network (C-RAN), characterized by a hierarchical structure in which part of the processing functionalities of the Radio Units (RUs) are migrated to a centralized cloud processor or Central Unit (CU). A major architectural constraint of C-RANs is imposed by capacity-limited fronthaul links connecting the RUs with the CU. In this study, the performance of a transmission scheme for massive connectivity is investigated under this architectural constraint. In particular, a non-coherent, grant-free transmission scheme is proposed where the encoding is performed based on a Gabor frame structure. The fronthaul processing is a particular instance of Detect-and-Forward (DtF), where local detection at the RUs is performed using a one-step thresholding procedure, and the local estimates are then merged at the central processor via the capacity-limited fronthaul links. Numerical results illustrate the potential of the proposed scheme to support massive, reliable random access with short messages.","PeriodicalId":272951,"journal":{"name":"2018 15th International Symposium on Wireless Communication Systems (ISWCS)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123714223","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 : 2018-08-01DOI: 10.1109/ISWCS.2018.8491067
Lang Xie, P. Heegaard, Yuming Jiang
Network design and operation of a mobile network infrastructure, especially its access points, need to consider survivability as a fundamental requirement. Quantifiable approaches to survivability analysis of such infrastructures are crucial. Most existing analytical models analyze the networks transient behaviors by applying homogeneous continuous-time Markov chain (CTMC). However, the distributions for transitions between states during a failure recovery are not exponential in many real cases. To address this problem, we first propose to use a non-Markovian model to characterize the transient behavior of the phased recovery of the network after a failure. Then, based on the proposed model, we conduct survivability analysis of the network. Moreover, numerical results are presented to validate the phase type (PH) approximation used in the proposed model. A case study illustrates the effects of different model parameters on the network's survivability. These results shed new insights not only on survivability analysis, e.g. the non-Markovian phased recovery model, but also on survivability provisioning, e.g. how the model parameters affect the network's survivability, of such a network against failure events.
{"title":"Non-Markovian Survivability Assessment Model for Infrastructure Wireless Networks","authors":"Lang Xie, P. Heegaard, Yuming Jiang","doi":"10.1109/ISWCS.2018.8491067","DOIUrl":"https://doi.org/10.1109/ISWCS.2018.8491067","url":null,"abstract":"Network design and operation of a mobile network infrastructure, especially its access points, need to consider survivability as a fundamental requirement. Quantifiable approaches to survivability analysis of such infrastructures are crucial. Most existing analytical models analyze the networks transient behaviors by applying homogeneous continuous-time Markov chain (CTMC). However, the distributions for transitions between states during a failure recovery are not exponential in many real cases. To address this problem, we first propose to use a non-Markovian model to characterize the transient behavior of the phased recovery of the network after a failure. Then, based on the proposed model, we conduct survivability analysis of the network. Moreover, numerical results are presented to validate the phase type (PH) approximation used in the proposed model. A case study illustrates the effects of different model parameters on the network's survivability. These results shed new insights not only on survivability analysis, e.g. the non-Markovian phased recovery model, but also on survivability provisioning, e.g. how the model parameters affect the network's survivability, of such a network against failure events.","PeriodicalId":272951,"journal":{"name":"2018 15th International Symposium on Wireless Communication Systems (ISWCS)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115134689","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 : 2018-08-01DOI: 10.1109/ISWCS.2018.8491068
Xiaoli Ma, Hao Ye, Geoffrey Y. Li
Channel estimation is a critical module to determine the performance of wireless receivers. For some communication systems, the channels are time-varying and without well-justified models, e.g., underwater acoustic channels, high mobility channels, and mm Wave channels. These channels are usually hard to use finite parameters to estimate and track. Channel estimation in these cases may significantly affect the symbol detection performance. In this paper, we develop learning assisted (LA) channel estimation algorithms. We use CNN and DNN based channel estimators to track channel variations. We demonstrate that the estimators can be dynamically updated using pilots through incremental learning. Different from the existing channel estimators, our algorithms combine learning techniques with preamble training symbols and pilots, and thus can track channel variations on-line and fit better for the current cellular systems, vehicular communications, and underwater acoustic systems. Simulation results validate the effectiveness of our algorithms.
{"title":"Learning Assisted Estimation for Time- Varying Channels","authors":"Xiaoli Ma, Hao Ye, Geoffrey Y. Li","doi":"10.1109/ISWCS.2018.8491068","DOIUrl":"https://doi.org/10.1109/ISWCS.2018.8491068","url":null,"abstract":"Channel estimation is a critical module to determine the performance of wireless receivers. For some communication systems, the channels are time-varying and without well-justified models, e.g., underwater acoustic channels, high mobility channels, and mm Wave channels. These channels are usually hard to use finite parameters to estimate and track. Channel estimation in these cases may significantly affect the symbol detection performance. In this paper, we develop learning assisted (LA) channel estimation algorithms. We use CNN and DNN based channel estimators to track channel variations. We demonstrate that the estimators can be dynamically updated using pilots through incremental learning. Different from the existing channel estimators, our algorithms combine learning techniques with preamble training symbols and pilots, and thus can track channel variations on-line and fit better for the current cellular systems, vehicular communications, and underwater acoustic systems. Simulation results validate the effectiveness of our algorithms.","PeriodicalId":272951,"journal":{"name":"2018 15th International Symposium on Wireless Communication Systems (ISWCS)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114619091","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 : 2018-08-01DOI: 10.1109/ISWCS.2018.8491054
S. Buzzi, C. D’Andrea, C. D'Elia
In the user-centric (UC) cell-free Massive MIMO architecture, a large number of distributed access points (APs) are deployed in a given area, each one serving the mobile stations (MSs) that are received with the largest power. This architecture has been shown to offer some advantages over a co-located massive MIMO architecture, especially in terms of fairness among users. This paper proposes to improve the performance of such a system by using local partial zero-forcing (PZF) precoding on the downlink and successive interference cancellation (SIC) on the uplink. The proposed schemes can be implemented locally, i.e. the channel estimates and the beamformers at the APs are computed and exploited locally, with no need to exchange information with a central processing unit (CPU); moreover the beamformers used at the MSs are channel independent, i.e. no channel estimate is needed at the MS. The numerical results show that the proposed transceiver algorithms provide remarkable performance improvements with respect to competing alternatives.
{"title":"User-Centric Cell-Free Massive MIMO with Interference Cancellation and Local ZF Downlink Precoding","authors":"S. Buzzi, C. D’Andrea, C. D'Elia","doi":"10.1109/ISWCS.2018.8491054","DOIUrl":"https://doi.org/10.1109/ISWCS.2018.8491054","url":null,"abstract":"In the user-centric (UC) cell-free Massive MIMO architecture, a large number of distributed access points (APs) are deployed in a given area, each one serving the mobile stations (MSs) that are received with the largest power. This architecture has been shown to offer some advantages over a co-located massive MIMO architecture, especially in terms of fairness among users. This paper proposes to improve the performance of such a system by using local partial zero-forcing (PZF) precoding on the downlink and successive interference cancellation (SIC) on the uplink. The proposed schemes can be implemented locally, i.e. the channel estimates and the beamformers at the APs are computed and exploited locally, with no need to exchange information with a central processing unit (CPU); moreover the beamformers used at the MSs are channel independent, i.e. no channel estimate is needed at the MS. The numerical results show that the proposed transceiver algorithms provide remarkable performance improvements with respect to competing alternatives.","PeriodicalId":272951,"journal":{"name":"2018 15th International Symposium on Wireless Communication Systems (ISWCS)","volume":"193 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122512951","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 : 2018-08-01DOI: 10.1109/ISWCS.2018.8491233
M. Nasimi, Mohammad Asif Habibi, B. Han, H. Schotten
In order to cope with explosive growth of data traffic which is associated with a wide plethora of emerging application and services that are expected to be used by both ordinary users and vertical industries, congestion control mechanism is considered to be vital. In this paper, we proposed a congestion control mechanism that could function within the framework of Multi-Access Edge Computing (MEC). The proposed mechanism is aiming to make real time decision for selectively buffering traffic, while taking network condition and Quality of Service (QoS) into consideration. In order to support a MEC-assisted scheme, the MEC server is expected to locally store delay-tolerant data traffics until the delay conditions expire. This enables network to have better control over the radio resource provisioning of higher priority data. To achieve this, we introduced a dedicated function known as Congestion Control Engine (CCE), which can capture Radio Access Network (RAN) condition through Radio Network Information Service (RNIS) function, and use this knowledge to make real time decision for selectively offloading traffic so that it can perform more intelligently. Analytical evaluation results of our proposed mechanism confirms that it can alleviate network congestion more efficiently.
{"title":"Edge-Assisted Congestion Control Mechanism for 5G Network Using Software-Defined Networking","authors":"M. Nasimi, Mohammad Asif Habibi, B. Han, H. Schotten","doi":"10.1109/ISWCS.2018.8491233","DOIUrl":"https://doi.org/10.1109/ISWCS.2018.8491233","url":null,"abstract":"In order to cope with explosive growth of data traffic which is associated with a wide plethora of emerging application and services that are expected to be used by both ordinary users and vertical industries, congestion control mechanism is considered to be vital. In this paper, we proposed a congestion control mechanism that could function within the framework of Multi-Access Edge Computing (MEC). The proposed mechanism is aiming to make real time decision for selectively buffering traffic, while taking network condition and Quality of Service (QoS) into consideration. In order to support a MEC-assisted scheme, the MEC server is expected to locally store delay-tolerant data traffics until the delay conditions expire. This enables network to have better control over the radio resource provisioning of higher priority data. To achieve this, we introduced a dedicated function known as Congestion Control Engine (CCE), which can capture Radio Access Network (RAN) condition through Radio Network Information Service (RNIS) function, and use this knowledge to make real time decision for selectively offloading traffic so that it can perform more intelligently. Analytical evaluation results of our proposed mechanism confirms that it can alleviate network congestion more efficiently.","PeriodicalId":272951,"journal":{"name":"2018 15th International Symposium on Wireless Communication Systems (ISWCS)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117316113","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 : 2018-08-01DOI: 10.1109/ISWCS.2018.8491195
Ang-Hsun Tsai
In this paper, the three-dimension directional antenna is proposed to be installed on the small-cells to mitigate the two-tier interference of the ultra-dense heterogeneous small-cell network. We investigate the impacts of the three-dimension directional antennas and the resource block (RB) usage ratio on the system capacity and link reliability for the ultra-dense small-cell system in an apartment building. The three-dimension directional antenna can provide the strong signal for users with the high main lobe gain, and mitigate the intra-cell interference among neighboring small-cells with low side lobes. Consequently, the average system throughput can be significantly improved under a link reliability requirement. Simulation results show that our proposed 12-sector directional antenna can improve 229% average system capacity compared to the 3-sector directional antenna under the link reliability requirement. Meanwhile, the omnidirectional antenna cannot afford the reliable service quality for users in the apartment building in the ultra-dense heterogeneous small-cell network.
{"title":"Two-Tier Interference Mitigation with Directional Antennas for Small-Cells in an Apartment Building","authors":"Ang-Hsun Tsai","doi":"10.1109/ISWCS.2018.8491195","DOIUrl":"https://doi.org/10.1109/ISWCS.2018.8491195","url":null,"abstract":"In this paper, the three-dimension directional antenna is proposed to be installed on the small-cells to mitigate the two-tier interference of the ultra-dense heterogeneous small-cell network. We investigate the impacts of the three-dimension directional antennas and the resource block (RB) usage ratio on the system capacity and link reliability for the ultra-dense small-cell system in an apartment building. The three-dimension directional antenna can provide the strong signal for users with the high main lobe gain, and mitigate the intra-cell interference among neighboring small-cells with low side lobes. Consequently, the average system throughput can be significantly improved under a link reliability requirement. Simulation results show that our proposed 12-sector directional antenna can improve 229% average system capacity compared to the 3-sector directional antenna under the link reliability requirement. Meanwhile, the omnidirectional antenna cannot afford the reliable service quality for users in the apartment building in the ultra-dense heterogeneous small-cell network.","PeriodicalId":272951,"journal":{"name":"2018 15th International Symposium on Wireless Communication Systems (ISWCS)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121862647","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 : 2018-08-01DOI: 10.1109/ISWCS.2018.8491077
Ignacio Rodriguez, Mads Lauridsen, Gabriel Vasluianu, Anders N. Poulsen, P. Mogensen
The Wireless Communications Networks Section, from the Department of Electronic Systems at Aalborg University, Denmark, has successfully deployed, in collaboration with a number of Danish local industrial partners and the municipality of Aalborg, a LoRa network in the Gigantium multi-arena center. The initial aim of this network is to serve as an integrated multi-arena indoor environment monitoring wireless system, in contrast to the existing cabled solutions based on bus communication systems for each of the individual arenas. In addition, the network also enables usage monitoring of arenas and meeting rooms. The final setup is comprised of 33 multi-sensor nodes distributed across the multiple arenas, and 4 gateways, which provide macroscopic diversity to the wireless system, ensuring a high level of reliability. The setup is already operational, but still open for optimization. The deployed network will serve as a testbed for research in the wireless, and indoor environment domains.
{"title":"The Gigantium Smart City Living Lab: A Multi-Arena LoRa-based Testbed","authors":"Ignacio Rodriguez, Mads Lauridsen, Gabriel Vasluianu, Anders N. Poulsen, P. Mogensen","doi":"10.1109/ISWCS.2018.8491077","DOIUrl":"https://doi.org/10.1109/ISWCS.2018.8491077","url":null,"abstract":"The Wireless Communications Networks Section, from the Department of Electronic Systems at Aalborg University, Denmark, has successfully deployed, in collaboration with a number of Danish local industrial partners and the municipality of Aalborg, a LoRa network in the Gigantium multi-arena center. The initial aim of this network is to serve as an integrated multi-arena indoor environment monitoring wireless system, in contrast to the existing cabled solutions based on bus communication systems for each of the individual arenas. In addition, the network also enables usage monitoring of arenas and meeting rooms. The final setup is comprised of 33 multi-sensor nodes distributed across the multiple arenas, and 4 gateways, which provide macroscopic diversity to the wireless system, ensuring a high level of reliability. The setup is already operational, but still open for optimization. The deployed network will serve as a testbed for research in the wireless, and indoor environment domains.","PeriodicalId":272951,"journal":{"name":"2018 15th International Symposium on Wireless Communication Systems (ISWCS)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125335319","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 : 2018-08-01DOI: 10.1109/ISWCS.2018.8491051
Alaa Khreis, P. Ciblat, Francesca Bassi, P. Duhamel
Reliable data transmission within wireless communication systems can be obtained via various means, including (i) Hybrid Automatic Repeat reQuest (HARQ) mechanisms which allow retransmission of incorrectly decoded packets; (ii) Additional nodes, called relays, which may also help the transmission by retransmitting these packets. An efficient combination of both techniques is therefore of great interest. This paper investigates a relay assisted HARQ protocol aiming at maximizing the system throughput. The protocol allows the source to transmit a new message during the same time-slot in which the relay is retransmitting a previous message. By using an efficient interference canceler at the destination, the numerical results show significant throughput gain compared to standard approaches.
{"title":"Throughput-efficient Relay assisted Hybrid ARQ","authors":"Alaa Khreis, P. Ciblat, Francesca Bassi, P. Duhamel","doi":"10.1109/ISWCS.2018.8491051","DOIUrl":"https://doi.org/10.1109/ISWCS.2018.8491051","url":null,"abstract":"Reliable data transmission within wireless communication systems can be obtained via various means, including (i) Hybrid Automatic Repeat reQuest (HARQ) mechanisms which allow retransmission of incorrectly decoded packets; (ii) Additional nodes, called relays, which may also help the transmission by retransmitting these packets. An efficient combination of both techniques is therefore of great interest. This paper investigates a relay assisted HARQ protocol aiming at maximizing the system throughput. The protocol allows the source to transmit a new message during the same time-slot in which the relay is retransmitting a previous message. By using an efficient interference canceler at the destination, the numerical results show significant throughput gain compared to standard approaches.","PeriodicalId":272951,"journal":{"name":"2018 15th International Symposium on Wireless Communication Systems (ISWCS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125447046","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 : 2018-08-01DOI: 10.1109/ISWCS.2018.8491053
Shaobo Liu, Biling Zhang, Jung-Lang Yu, Zhu Han
In order to fully exploit the potentials of the heterogeneous cloud radio access networks (H-CRANs), how to associate the user equipments (UEs) with the appropriate low power nodes (LPNs) is a very essential problem. However, when the fronthaul constraint is limited, the UEs are sensitive to delay, and the LPNs are concerned about the traffic balancing, such a problem has not gained enough attention. In this paper, the aforementioned user association problem is investigated and formulated as a bidirectional matching game, where the UEs are seeking to access the most preferred LPN while the LPNs are seeking to accept the most preferred UEs. To find the solution to the proposed game, an iteration algorithm is proposed, and its computational complexity and convergence are proved as well. Simulation results show that our proposed user association scheme is effective and outperforms the existing schemes-in terms of achieved data rates, delay, traffic balancing and overall utility.
{"title":"A Delay and Traffic Balancing Sensitive Scheme for User Association in Limited Fronthaul H-CRAN s","authors":"Shaobo Liu, Biling Zhang, Jung-Lang Yu, Zhu Han","doi":"10.1109/ISWCS.2018.8491053","DOIUrl":"https://doi.org/10.1109/ISWCS.2018.8491053","url":null,"abstract":"In order to fully exploit the potentials of the heterogeneous cloud radio access networks (H-CRANs), how to associate the user equipments (UEs) with the appropriate low power nodes (LPNs) is a very essential problem. However, when the fronthaul constraint is limited, the UEs are sensitive to delay, and the LPNs are concerned about the traffic balancing, such a problem has not gained enough attention. In this paper, the aforementioned user association problem is investigated and formulated as a bidirectional matching game, where the UEs are seeking to access the most preferred LPN while the LPNs are seeking to accept the most preferred UEs. To find the solution to the proposed game, an iteration algorithm is proposed, and its computational complexity and convergence are proved as well. Simulation results show that our proposed user association scheme is effective and outperforms the existing schemes-in terms of achieved data rates, delay, traffic balancing and overall utility.","PeriodicalId":272951,"journal":{"name":"2018 15th International Symposium on Wireless Communication Systems (ISWCS)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133165978","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 : 2018-08-01DOI: 10.1109/ISWCS.2018.8491243
Daniel A. R. Adauto, R. M. D. Moraes
Some multi-channel medium access control (MAC) protocols have been proposed to provide more efficient communication in ad hoc networks. In addition, each communication channel can be shared simultaneously among several nodes through techniques such as multiple-input multiple-output (MIMO) and frequency division multiple access (FDMA), making the IEEE 802.11 Standard-based technology suitable for multipacket transmission and reception (MPTR). This paper presents a new Hybrid and Adaptive Approach to the Many-to-Many Communication Multi-channel MAC Protocol (H-M2MMAC) based on the Split Phase scheme of the IEEE 802.11 Power Save Mode (PSM). Beyond using the communication phase to transmit data, it enables the transmission of data during the negotiation (or control) phase under high load conditions. The results show that H-M2MMAC has superior throughput performance compared with related multi-channel protocols.
{"title":"A Hybrid Many-to-Many Communication Multi -Channel MAC Protocol for Ad Hoc Networks","authors":"Daniel A. R. Adauto, R. M. D. Moraes","doi":"10.1109/ISWCS.2018.8491243","DOIUrl":"https://doi.org/10.1109/ISWCS.2018.8491243","url":null,"abstract":"Some multi-channel medium access control (MAC) protocols have been proposed to provide more efficient communication in ad hoc networks. In addition, each communication channel can be shared simultaneously among several nodes through techniques such as multiple-input multiple-output (MIMO) and frequency division multiple access (FDMA), making the IEEE 802.11 Standard-based technology suitable for multipacket transmission and reception (MPTR). This paper presents a new Hybrid and Adaptive Approach to the Many-to-Many Communication Multi-channel MAC Protocol (H-M2MMAC) based on the Split Phase scheme of the IEEE 802.11 Power Save Mode (PSM). Beyond using the communication phase to transmit data, it enables the transmission of data during the negotiation (or control) phase under high load conditions. The results show that H-M2MMAC has superior throughput performance compared with related multi-channel protocols.","PeriodicalId":272951,"journal":{"name":"2018 15th International Symposium on Wireless Communication Systems (ISWCS)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127457074","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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