Pub Date : 2012-06-26DOI: 10.1109/ICCITECHNOL.2012.6285830
N. Hajri, N. Youssef
In this paper, we study the performance of binary noncoherent modulation schemes in mobile-to-mobile (M2M) radio communications over slowly varying and frequency nonselective double Hoyt fading channels perturbed by additive white Gaussian noise (AWGN). The propagation environment between the mobile transmitter and receiver is modeled by a product of two independent but not necessarily identically distributed Hoyt multipath fading processes. By considering this multipath fading model and based on the use of a recently presented formula for the probability density function (PDF) of the instantaneous signal-to-noise ratio (SNR) under double Hoyt channels, we derive a generic expression for the bit error probability (BEP) performance of binary noncoherent differential phase-shift keying (DPSK) and frequency-shift keying (FSK) modulation schemes. As special cases, the obtained BEP expression includes results corresponding to the double Rayleigh, double one-sided Gaussian, as well as combined Rayleigh×one-sided Gaussian, Rayleigh×Hoyt, and Hoyt×one-sided Gaussian fading channels. By considering different combinations of the Hoyt fading severity parameters, the validity and accuracy of the presented analytical results are confirmed by simulations.
{"title":"On the BEP performance of binary noncoherent modulation schemes in frequency-nonselective M2M double Hoyt fading channels","authors":"N. Hajri, N. Youssef","doi":"10.1109/ICCITECHNOL.2012.6285830","DOIUrl":"https://doi.org/10.1109/ICCITECHNOL.2012.6285830","url":null,"abstract":"In this paper, we study the performance of binary noncoherent modulation schemes in mobile-to-mobile (M2M) radio communications over slowly varying and frequency nonselective double Hoyt fading channels perturbed by additive white Gaussian noise (AWGN). The propagation environment between the mobile transmitter and receiver is modeled by a product of two independent but not necessarily identically distributed Hoyt multipath fading processes. By considering this multipath fading model and based on the use of a recently presented formula for the probability density function (PDF) of the instantaneous signal-to-noise ratio (SNR) under double Hoyt channels, we derive a generic expression for the bit error probability (BEP) performance of binary noncoherent differential phase-shift keying (DPSK) and frequency-shift keying (FSK) modulation schemes. As special cases, the obtained BEP expression includes results corresponding to the double Rayleigh, double one-sided Gaussian, as well as combined Rayleigh×one-sided Gaussian, Rayleigh×Hoyt, and Hoyt×one-sided Gaussian fading channels. By considering different combinations of the Hoyt fading severity parameters, the validity and accuracy of the presented analytical results are confirmed by simulations.","PeriodicalId":435718,"journal":{"name":"2012 International Conference on Communications and Information Technology (ICCIT)","volume":"128 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114493161","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 : 2012-06-26DOI: 10.1109/ICCITECHNOL.2012.6285850
H. Mcheick, Y. Qi
Software architecture has a vital role in achieving quality goals for large scale software systems which is made up of components and connectors. For reducing the complexity of software, components and connectors are applied to understanding, designing, and implementing software, especially connectors residing in distributed systems. To satisfy requirements of interaction between various components, it is time and cost consuming process to create a connector. In particular, it is often difficult to select only one type of connector to develop connectors in distributed systems. To address the difficulties, our research focuses on the issue: how do traditional types of connectors, in combination with new technologies in distributed systems, provide systems architectures with loosely coupled structures. In this paper, we propose an approach to the combination of connectors in order to provide distributed systems with loosely coupled interaction. Our approach involves AOP technology and design pattern, as well as messaging systems. In the end, we present an example of our approach in which we show a connector designed by combining the AspectJ, shared memory, UDP Socket and publish-subscribe design pattern with the aim of designing a loosely coupled system architecture.
{"title":"Combination of connectors with loosely coupled architecture based on aspect-oriented computing","authors":"H. Mcheick, Y. Qi","doi":"10.1109/ICCITECHNOL.2012.6285850","DOIUrl":"https://doi.org/10.1109/ICCITECHNOL.2012.6285850","url":null,"abstract":"Software architecture has a vital role in achieving quality goals for large scale software systems which is made up of components and connectors. For reducing the complexity of software, components and connectors are applied to understanding, designing, and implementing software, especially connectors residing in distributed systems. To satisfy requirements of interaction between various components, it is time and cost consuming process to create a connector. In particular, it is often difficult to select only one type of connector to develop connectors in distributed systems. To address the difficulties, our research focuses on the issue: how do traditional types of connectors, in combination with new technologies in distributed systems, provide systems architectures with loosely coupled structures. In this paper, we propose an approach to the combination of connectors in order to provide distributed systems with loosely coupled interaction. Our approach involves AOP technology and design pattern, as well as messaging systems. In the end, we present an example of our approach in which we show a connector designed by combining the AspectJ, shared memory, UDP Socket and publish-subscribe design pattern with the aim of designing a loosely coupled system architecture.","PeriodicalId":435718,"journal":{"name":"2012 International Conference on Communications and Information Technology (ICCIT)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125904918","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 : 2012-06-26DOI: 10.1109/ICCITECHNOL.2012.6285817
S. Yessad, Nassima Tazarart, Lyes Bakli, L. Bouallouche-Medjkoune, D. Aïssani
As sensor networks are battery powered and it is uneasy to recharge, the primary goal in this field is to reduce energy consumption and enhance network lifetime. To achieve this objective we must reduce the energy consumption during the routing functionality and use sensor nodes in an equitable manner. The aim of this paper is to propose a new protocol for multi-path routing in which nodes choose one route among several routes with a probability which will counts the residual energy, the energy of the communication and the number of paths including the forwarding node. Our approach allows the sensor nodes of the network wasting their energy in an equitable manner in order to enhance the lifetime of the sensor network. This is proved by simulation on SENSIM. We have implemented our solution and compared it with EAR and FEAR, results show that our protocol outperforms EAR and FEAR by enhancing the network lifetime.
{"title":"Balanced energy efficient routing protocol for WSN","authors":"S. Yessad, Nassima Tazarart, Lyes Bakli, L. Bouallouche-Medjkoune, D. Aïssani","doi":"10.1109/ICCITECHNOL.2012.6285817","DOIUrl":"https://doi.org/10.1109/ICCITECHNOL.2012.6285817","url":null,"abstract":"As sensor networks are battery powered and it is uneasy to recharge, the primary goal in this field is to reduce energy consumption and enhance network lifetime. To achieve this objective we must reduce the energy consumption during the routing functionality and use sensor nodes in an equitable manner. The aim of this paper is to propose a new protocol for multi-path routing in which nodes choose one route among several routes with a probability which will counts the residual energy, the energy of the communication and the number of paths including the forwarding node. Our approach allows the sensor nodes of the network wasting their energy in an equitable manner in order to enhance the lifetime of the sensor network. This is proved by simulation on SENSIM. We have implemented our solution and compared it with EAR and FEAR, results show that our protocol outperforms EAR and FEAR by enhancing the network lifetime.","PeriodicalId":435718,"journal":{"name":"2012 International Conference on Communications and Information Technology (ICCIT)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131313931","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 : 2012-06-26DOI: 10.1109/ICCITECHNOL.2012.6285785
N. Rikli, Saleh AI-Shebeili
A priority scheme is proposed to assign radio resources to mobile terminals from classes with different QoS requirements. Using existing algorithms, the pertinent parameters were chosen to achieve some level of service differentiation. In the current setup, three classes were considered with generic statistical characteristics, and basic service policies. The results showed the persistent class differentiation under most parameters variations.
{"title":"Prioritized radio resource management in WiMax networks","authors":"N. Rikli, Saleh AI-Shebeili","doi":"10.1109/ICCITECHNOL.2012.6285785","DOIUrl":"https://doi.org/10.1109/ICCITECHNOL.2012.6285785","url":null,"abstract":"A priority scheme is proposed to assign radio resources to mobile terminals from classes with different QoS requirements. Using existing algorithms, the pertinent parameters were chosen to achieve some level of service differentiation. In the current setup, three classes were considered with generic statistical characteristics, and basic service policies. The results showed the persistent class differentiation under most parameters variations.","PeriodicalId":435718,"journal":{"name":"2012 International Conference on Communications and Information Technology (ICCIT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129074751","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 : 2012-06-26DOI: 10.1109/ICCITECHNOL.2012.6285835
M. Z. Shakir, R. Atat, Mohamed-Slim Alouini
Cognitive Radios are considered as a standard part of future Heterogeneous mobile network architecture. In this paper, we consider a two tier Heterogeneous network with multiple radio access technologies (RATS) namely; (i) the secondary network which comprises of cognitive enabled femto base stations which are referred to as cognitive-femto BS (CFBS) such that each of the BS are equipped with a single antenna and (ii) the macrocell network which is considered as a primary network. The effectiveness of the cognitive transmission is based on the efficient spectrum sensing algorithms which determine the availability of the spectrum holes. However, it is equally important for the cognitive network to minimize the cross-tier interference particularly during (i) the spectrum sensing and (ii) the cognitive transmission if spectrum is available. By exploiting the cooperation among the CFBS, the multiple CFBS can be considered as a single base station with multiple geographically dispersed antennas. In this context, we proposed a smart network where CFBS collaborates to reduce the cross-tier interference level by directing the main beam toward the desired femtocell mobile user and creating null toward the cross-tier interference. The resultant network is referred to as Smart cognitive-femto network (SCFN) which requires the CFBS to be self-aware such that the CFBS are aware of their surroundings and adapt accordingly to maintain a reliable and efficient communication link. In order to determine the effectiveness of the proposed smart network, we study the interference rejection (or suppression) capabilities of the SCFN. It has been shown that the proposed smart network offers significant performance improvements in interference suppression and signal to interference ratio (SIR) and may be considered as a promising solution to the interference management problems in Heterogeneous network.
{"title":"On the interference suppression capabilities of cognitive enabled femto cellular networks","authors":"M. Z. Shakir, R. Atat, Mohamed-Slim Alouini","doi":"10.1109/ICCITECHNOL.2012.6285835","DOIUrl":"https://doi.org/10.1109/ICCITECHNOL.2012.6285835","url":null,"abstract":"Cognitive Radios are considered as a standard part of future Heterogeneous mobile network architecture. In this paper, we consider a two tier Heterogeneous network with multiple radio access technologies (RATS) namely; (i) the secondary network which comprises of cognitive enabled femto base stations which are referred to as cognitive-femto BS (CFBS) such that each of the BS are equipped with a single antenna and (ii) the macrocell network which is considered as a primary network. The effectiveness of the cognitive transmission is based on the efficient spectrum sensing algorithms which determine the availability of the spectrum holes. However, it is equally important for the cognitive network to minimize the cross-tier interference particularly during (i) the spectrum sensing and (ii) the cognitive transmission if spectrum is available. By exploiting the cooperation among the CFBS, the multiple CFBS can be considered as a single base station with multiple geographically dispersed antennas. In this context, we proposed a smart network where CFBS collaborates to reduce the cross-tier interference level by directing the main beam toward the desired femtocell mobile user and creating null toward the cross-tier interference. The resultant network is referred to as Smart cognitive-femto network (SCFN) which requires the CFBS to be self-aware such that the CFBS are aware of their surroundings and adapt accordingly to maintain a reliable and efficient communication link. In order to determine the effectiveness of the proposed smart network, we study the interference rejection (or suppression) capabilities of the SCFN. It has been shown that the proposed smart network offers significant performance improvements in interference suppression and signal to interference ratio (SIR) and may be considered as a promising solution to the interference management problems in Heterogeneous network.","PeriodicalId":435718,"journal":{"name":"2012 International Conference on Communications and Information Technology (ICCIT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128030576","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 : 2012-06-26DOI: 10.1109/ICCITECHNOL.2012.6285771
Neziha Jaouadi, R. Ejbali, M. Zaied, C. Amar
In order to improve the speech recognition system, we have proposed the study of the speaker's state in the pronunciation of a word, as an example. Believing that "a speaker can never utter a word in the same way twice" we have decided to study the acoustic space to identify changes in frequency of different discourses. Our goal is to add information about the state of a speaker to improve decision making in the phase of recognition. During this phase, we have based our work on Beta wavelet network as technique to model acoustic unit of speech.
{"title":"The impact of the speaker's state on speech recognition","authors":"Neziha Jaouadi, R. Ejbali, M. Zaied, C. Amar","doi":"10.1109/ICCITECHNOL.2012.6285771","DOIUrl":"https://doi.org/10.1109/ICCITECHNOL.2012.6285771","url":null,"abstract":"In order to improve the speech recognition system, we have proposed the study of the speaker's state in the pronunciation of a word, as an example. Believing that \"a speaker can never utter a word in the same way twice\" we have decided to study the acoustic space to identify changes in frequency of different discourses. Our goal is to add information about the state of a speaker to improve decision making in the phase of recognition. During this phase, we have based our work on Beta wavelet network as technique to model acoustic unit of speech.","PeriodicalId":435718,"journal":{"name":"2012 International Conference on Communications and Information Technology (ICCIT)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132020975","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 : 2012-06-26DOI: 10.1109/ICCITECHNOL.2012.6285838
Nejah Missaoui, I. Kammoun, M. Siala
In this paper, we propose a novel approach for the enhancement of slotted ALOHA protocol in general cellular networks, deploying relays to expand their coverage area. In our study, we focus on uplink access and consider a moderate access rate of users to the wireless medium, i.e most of the collisions occur between two packets. When two users transmit simultaneously during the same time slot, a Spatial Successive Interference Cancellation (SSIC) is performed at the destination to separate collided packets. If this separation fails, our idea is that a relay selected from the set of available relays amplifies and forwards the signals received from the two users. Then, the destination combines the received signals coming from the interfering users and from the relay. We evaluate the performance of the proposed approach in terms of throughput and bit error rate (BER). Simulation results show that our approach achieves significantly better performances in terms of BER and through put than both conventional slotted ALOHA protocol and collision resolution with interference cancellation.
{"title":"Enhanced Slotted ALOHA protocol with collision processing and relay cooperation","authors":"Nejah Missaoui, I. Kammoun, M. Siala","doi":"10.1109/ICCITECHNOL.2012.6285838","DOIUrl":"https://doi.org/10.1109/ICCITECHNOL.2012.6285838","url":null,"abstract":"In this paper, we propose a novel approach for the enhancement of slotted ALOHA protocol in general cellular networks, deploying relays to expand their coverage area. In our study, we focus on uplink access and consider a moderate access rate of users to the wireless medium, i.e most of the collisions occur between two packets. When two users transmit simultaneously during the same time slot, a Spatial Successive Interference Cancellation (SSIC) is performed at the destination to separate collided packets. If this separation fails, our idea is that a relay selected from the set of available relays amplifies and forwards the signals received from the two users. Then, the destination combines the received signals coming from the interfering users and from the relay. We evaluate the performance of the proposed approach in terms of throughput and bit error rate (BER). Simulation results show that our approach achieves significantly better performances in terms of BER and through put than both conventional slotted ALOHA protocol and collision resolution with interference cancellation.","PeriodicalId":435718,"journal":{"name":"2012 International Conference on Communications and Information Technology (ICCIT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115898423","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 : 2012-06-26DOI: 10.1109/ICCITECHNOL.2012.6285848
Rim Moussa
Several companies report success stories after migration from relational database management systems to NoSQL systems (Not only SQL). The latter seem to take over in most data storage fields. These technologies must be used properly, and businesses must be aware of the limitations of NoSQL, for providing real benefits. Pig Latin is a high-level language for expressing data analysis programs, and implementing the MapReduce framework on top of Hadoop Distributed File System. This paper benchmarks Pig Latin using the well known TPC-H benchmark -a Decision Support System benchmark, and reports performance results for different settings on GRID5000 clusters.
{"title":"TPC-H benchmarking of Pig Latin on a Hadoop cluster","authors":"Rim Moussa","doi":"10.1109/ICCITECHNOL.2012.6285848","DOIUrl":"https://doi.org/10.1109/ICCITECHNOL.2012.6285848","url":null,"abstract":"Several companies report success stories after migration from relational database management systems to NoSQL systems (Not only SQL). The latter seem to take over in most data storage fields. These technologies must be used properly, and businesses must be aware of the limitations of NoSQL, for providing real benefits. Pig Latin is a high-level language for expressing data analysis programs, and implementing the MapReduce framework on top of Hadoop Distributed File System. This paper benchmarks Pig Latin using the well known TPC-H benchmark -a Decision Support System benchmark, and reports performance results for different settings on GRID5000 clusters.","PeriodicalId":435718,"journal":{"name":"2012 International Conference on Communications and Information Technology (ICCIT)","volume":"175 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115175550","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 : 2012-06-26DOI: 10.1109/ICCITECHNOL.2012.6285788
Chakkaphong Suthaputchakun, Zhili Sun
This paper proposes a reliability enhancement routing protocol in Vehicular Ad hoc Network (VANET) called Priority based Routing Protocol with Reliability Enhancement (PRP-RE). Priority based Routing Protocol (PRP) was previously proposed to provide i) fully distributed routing protocol, ii) different quality of services (QoS) for different types of messages, iii) maximum message dissemination distance per hop of information relay. However, PRP cannot attain high reliability when dissemination distance becomes larger. With the reliability enhancement, implicit acknowledgement and retransmission mechanisms, PRP-RE are able to achieve both higher reliability and further message dissemination distance. PRP-RE is evaluated using network simulation tool named OMNeT++ in terms of average MAC delay as well as percentage of message reception and collision. The results show PRP-RE provides significant improvement in both reception rate and communication distance, with a little impact on MAC delay. In addition, PRP-RE is still able to maintain proportional MAC delay according to priorities of messages in fully distributed environment. Therefore, the PRP-RE presents a good balance of reliability, delay, and dissemination distance.
{"title":"Priority based routing protocol with reliability enhancement in Vehicular Ad hoc Network","authors":"Chakkaphong Suthaputchakun, Zhili Sun","doi":"10.1109/ICCITECHNOL.2012.6285788","DOIUrl":"https://doi.org/10.1109/ICCITECHNOL.2012.6285788","url":null,"abstract":"This paper proposes a reliability enhancement routing protocol in Vehicular Ad hoc Network (VANET) called Priority based Routing Protocol with Reliability Enhancement (PRP-RE). Priority based Routing Protocol (PRP) was previously proposed to provide i) fully distributed routing protocol, ii) different quality of services (QoS) for different types of messages, iii) maximum message dissemination distance per hop of information relay. However, PRP cannot attain high reliability when dissemination distance becomes larger. With the reliability enhancement, implicit acknowledgement and retransmission mechanisms, PRP-RE are able to achieve both higher reliability and further message dissemination distance. PRP-RE is evaluated using network simulation tool named OMNeT++ in terms of average MAC delay as well as percentage of message reception and collision. The results show PRP-RE provides significant improvement in both reception rate and communication distance, with a little impact on MAC delay. In addition, PRP-RE is still able to maintain proportional MAC delay according to priorities of messages in fully distributed environment. Therefore, the PRP-RE presents a good balance of reliability, delay, and dissemination distance.","PeriodicalId":435718,"journal":{"name":"2012 International Conference on Communications and Information Technology (ICCIT)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127389707","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 : 2012-06-26DOI: 10.1109/ICCITECHNOL.2012.6285797
Malik Mubashir Hassan, A. Guéroui
Wireless Mesh Networks (WMNs) are now of the emerging networks in IP world, because of their robustness, simplicity, fault tolerant ability and fast deployment. Realizing the fact that there is adequate need of improvement in QoS researchers have been proposing various techniques to address the issue. We propose a scheme that is based on modification of Dynamic Reallocation of the Mesh Deterministic Access and MAC layer's contention-based distributed coordinated function (DCF) or contention window (CW) that is responsible for sharing the wireless medium. We study the influence of Mesh Coordination Function (MCF) and Hybrid Coordination Function (HCF) by modifying the normal MAC layer to improve and ensure Quality of Service by various parameters. The results obtained after simulations are quite promising and show that our proposed modification significantly improves QoS for WMNs to model presented in IEEE 802.11s/D4.0 [1].
无线网状网络(WMNs)以其鲁棒性、简单性、容错能力和部署速度快等优点成为IP网络领域的新兴网络之一。意识到QoS有足够的改进需求，研究人员已经提出了各种技术来解决这个问题。本文提出了一种基于修改Mesh确定性访问的动态再分配机制和MAC层负责共享无线介质的基于争用的分布式协调函数(DCF)或争用窗口(CW)的方案。研究了Mesh Coordination Function (MCF)和Hybrid Coordination Function (HCF)的影响，通过对普通MAC层的修改，通过各种参数来提高和保证服务质量。仿真得到的结果非常有希望，表明我们提出的修改显著提高了IEEE 802.11s/D4.0中提出的wmn模型的QoS[1]。
{"title":"I. Improvement of Qos by Dynamic Reallocation of the Mesh Deterministic Access in Wireless Mesh Networks Ieee 802.11s","authors":"Malik Mubashir Hassan, A. Guéroui","doi":"10.1109/ICCITECHNOL.2012.6285797","DOIUrl":"https://doi.org/10.1109/ICCITECHNOL.2012.6285797","url":null,"abstract":"Wireless Mesh Networks (WMNs) are now of the emerging networks in IP world, because of their robustness, simplicity, fault tolerant ability and fast deployment. Realizing the fact that there is adequate need of improvement in QoS researchers have been proposing various techniques to address the issue. We propose a scheme that is based on modification of Dynamic Reallocation of the Mesh Deterministic Access and MAC layer's contention-based distributed coordinated function (DCF) or contention window (CW) that is responsible for sharing the wireless medium. We study the influence of Mesh Coordination Function (MCF) and Hybrid Coordination Function (HCF) by modifying the normal MAC layer to improve and ensure Quality of Service by various parameters. The results obtained after simulations are quite promising and show that our proposed modification significantly improves QoS for WMNs to model presented in IEEE 802.11s/D4.0 [1].","PeriodicalId":435718,"journal":{"name":"2012 International Conference on Communications and Information Technology (ICCIT)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122114384","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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