Pub Date : 2009-12-14DOI: 10.1109/ANTS.2009.5409888
Shanshan Chen, Samuel Cheng, P. Verma, R. Huck
This paper presents six heuristic algorithms for designing minimum cost Free Spaces Optics (FSO) networks. The criterion used for minimizing cost is the same as minimizing the total number of links in the network or, equivalently, minimizing the number of transceiver pairs.
{"title":"Heuristic algorithms for designing minimum cost FSO networks","authors":"Shanshan Chen, Samuel Cheng, P. Verma, R. Huck","doi":"10.1109/ANTS.2009.5409888","DOIUrl":"https://doi.org/10.1109/ANTS.2009.5409888","url":null,"abstract":"This paper presents six heuristic algorithms for designing minimum cost Free Spaces Optics (FSO) networks. The criterion used for minimizing cost is the same as minimizing the total number of links in the network or, equivalently, minimizing the number of transceiver pairs.","PeriodicalId":245765,"journal":{"name":"2009 IEEE 3rd International Symposium on Advanced Networks and Telecommunication Systems (ANTS)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124469042","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 : 2009-12-14DOI: 10.1109/ANTS.2009.5409848
Busra Yuksel, Merve Cingoz, G. Karabulut, S. Oktug
There are three types of calls in a wireless cellular network; handover calls which terminate in a different cell than it originated from, inner calls which terminate in the originated cell and total calls which include both handover and inner calls. In our study, using empirical data, we first show that the handover rate of a regular cell is not negligible. Therefore, call arrivals in a cell have to be modeled by considering handover calls. In this paper, we demonstrate that both handover and inner calls can be separately modeled as Poisson distribution which have unity fraction of variance and mean. In addition, total calls' arrivals also obey the Poisson process either for 1 hour or 24 hour intervals.
{"title":"Call arrival model for GSM network including handover","authors":"Busra Yuksel, Merve Cingoz, G. Karabulut, S. Oktug","doi":"10.1109/ANTS.2009.5409848","DOIUrl":"https://doi.org/10.1109/ANTS.2009.5409848","url":null,"abstract":"There are three types of calls in a wireless cellular network; handover calls which terminate in a different cell than it originated from, inner calls which terminate in the originated cell and total calls which include both handover and inner calls. In our study, using empirical data, we first show that the handover rate of a regular cell is not negligible. Therefore, call arrivals in a cell have to be modeled by considering handover calls. In this paper, we demonstrate that both handover and inner calls can be separately modeled as Poisson distribution which have unity fraction of variance and mean. In addition, total calls' arrivals also obey the Poisson process either for 1 hour or 24 hour intervals.","PeriodicalId":245765,"journal":{"name":"2009 IEEE 3rd International Symposium on Advanced Networks and Telecommunication Systems (ANTS)","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122876539","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 : 2009-12-14DOI: 10.1109/ANTS.2009.5409884
A. Gadkar
To harness the enormous bandwidth potential of a fiber, Time Division Multiplexing over wavelength channels has been proposed. In one type of time slotted optical network called as Time Wavelength Switched Network (TWSN), the Time Wavelength-Space Routers (TWSRs) are configured to switch time slots within a time frame. Another kind of time slotted network is the Time Domain Wavelength Interleaved Network (TWIN), which eliminates time switching within the network by using passive Wavelength Selective Switches(WSSs) in the core and an intelligent edge utilizing a fast tunable laser to emulate fast switching. In this paper, we provide an integer linear program to solve the scheduling problem for a static traffic matrix (of connections) for the TWIN network, and also present a heuristic algorithm. We then compare the performances of the two networks under dynamic traffic and investigate the benefits of having a fast reconfigurable switch as opposed to WSSs.
{"title":"A comparison of optical time slotted networks","authors":"A. Gadkar","doi":"10.1109/ANTS.2009.5409884","DOIUrl":"https://doi.org/10.1109/ANTS.2009.5409884","url":null,"abstract":"To harness the enormous bandwidth potential of a fiber, Time Division Multiplexing over wavelength channels has been proposed. In one type of time slotted optical network called as Time Wavelength Switched Network (TWSN), the Time Wavelength-Space Routers (TWSRs) are configured to switch time slots within a time frame. Another kind of time slotted network is the Time Domain Wavelength Interleaved Network (TWIN), which eliminates time switching within the network by using passive Wavelength Selective Switches(WSSs) in the core and an intelligent edge utilizing a fast tunable laser to emulate fast switching. In this paper, we provide an integer linear program to solve the scheduling problem for a static traffic matrix (of connections) for the TWIN network, and also present a heuristic algorithm. We then compare the performances of the two networks under dynamic traffic and investigate the benefits of having a fast reconfigurable switch as opposed to WSSs.","PeriodicalId":245765,"journal":{"name":"2009 IEEE 3rd International Symposium on Advanced Networks and Telecommunication Systems (ANTS)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125991048","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 : 2009-12-14DOI: 10.1109/ANTS.2009.5409846
Z. Zeinalpour-Yazdi, M. Nasiri-Kenari, B. Aazhang
In this paper, we present the average bit error probability (BEP) of a decode-and-forward relay network employing UWB links, developed by IEEE 802.15.4a standards, between its nodes. Our methodology is based on computing the Characteristic Function (CF) of the decision variable at the destination terminal. Numerical results show that significant improvement in the BEP of impulse radio UWB system is obtained by adding a relay node. The analytical expressions are also validated by computer simulations which confirm the accuracy of the approximations used in obtaining the BEP.
{"title":"BER derivation for UWB communication with a relay node in the presence of inter-channel interference","authors":"Z. Zeinalpour-Yazdi, M. Nasiri-Kenari, B. Aazhang","doi":"10.1109/ANTS.2009.5409846","DOIUrl":"https://doi.org/10.1109/ANTS.2009.5409846","url":null,"abstract":"In this paper, we present the average bit error probability (BEP) of a decode-and-forward relay network employing UWB links, developed by IEEE 802.15.4a standards, between its nodes. Our methodology is based on computing the Characteristic Function (CF) of the decision variable at the destination terminal. Numerical results show that significant improvement in the BEP of impulse radio UWB system is obtained by adding a relay node. The analytical expressions are also validated by computer simulations which confirm the accuracy of the approximations used in obtaining the BEP.","PeriodicalId":245765,"journal":{"name":"2009 IEEE 3rd International Symposium on Advanced Networks and Telecommunication Systems (ANTS)","volume":"123 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124001753","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 : 2009-12-14DOI: 10.1109/ANTS.2009.5409854
A. Vishwanath, V. Sivaraman, D. Ostry
There is widespread debate regarding the nature of TCP traffic in today's Internet - while some researchers have shown that it exhibits long-range dependent (LRD) properties, others argue that it can be modelled as a Poisson process due to the high degree of traffic aggregation that exists in the core. In this paper, we investigate the nature of TCP traffic as the Internet core moves towards an all-optical packet switched network with very limited buffering (few tens of KiloBytes) capability. In particular, we show that the bottleneck link buffers have a large influence on the aggregate TCP arrival process: large buffers can induce synchronisation amongst TCP flows, thus creating significant burstiness (equivalently LRD), but as buffers become smaller, the TCP aggregate can be well approximated as a Poisson process. Our work has major impact on the design and analysis of future high-speed optical packet switched networks with very small buffers.
{"title":"How Poisson is TCP traffic at short time-scales in a small buffer core network?","authors":"A. Vishwanath, V. Sivaraman, D. Ostry","doi":"10.1109/ANTS.2009.5409854","DOIUrl":"https://doi.org/10.1109/ANTS.2009.5409854","url":null,"abstract":"There is widespread debate regarding the nature of TCP traffic in today's Internet - while some researchers have shown that it exhibits long-range dependent (LRD) properties, others argue that it can be modelled as a Poisson process due to the high degree of traffic aggregation that exists in the core. In this paper, we investigate the nature of TCP traffic as the Internet core moves towards an all-optical packet switched network with very limited buffering (few tens of KiloBytes) capability. In particular, we show that the bottleneck link buffers have a large influence on the aggregate TCP arrival process: large buffers can induce synchronisation amongst TCP flows, thus creating significant burstiness (equivalently LRD), but as buffers become smaller, the TCP aggregate can be well approximated as a Poisson process. Our work has major impact on the design and analysis of future high-speed optical packet switched networks with very small buffers.","PeriodicalId":245765,"journal":{"name":"2009 IEEE 3rd International Symposium on Advanced Networks and Telecommunication Systems (ANTS)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130302111","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 : 2009-12-14DOI: 10.1109/ANTS.2009.5409869
R. Nallusamy, S. Paul
Increasing the revenue through monetization of content is becoming the priority for content owners and service providers. Portable devices such as smartphones and other audio and video devices have joined computers as end-user devices for accessing digital content over the Internet. This increases the revenue potential and also the security risks and protection requirements. Strong authentication of the user and access device is fundamental to prevent revenue leakage and is a necessary prerequisite for other security controls such as DRMs and encryption between media server and client. This article proposes a strong authentication mechanism for authenticating the user and the device using digital certificate and Device ID along with the conventional User ID - password. A Secure Video Store application implemented with the proposed strong authentication and showcased to leading telecom operators is described in this paper as a case study.
{"title":"Strong authentication for secure content access in converged networks","authors":"R. Nallusamy, S. Paul","doi":"10.1109/ANTS.2009.5409869","DOIUrl":"https://doi.org/10.1109/ANTS.2009.5409869","url":null,"abstract":"Increasing the revenue through monetization of content is becoming the priority for content owners and service providers. Portable devices such as smartphones and other audio and video devices have joined computers as end-user devices for accessing digital content over the Internet. This increases the revenue potential and also the security risks and protection requirements. Strong authentication of the user and access device is fundamental to prevent revenue leakage and is a necessary prerequisite for other security controls such as DRMs and encryption between media server and client. This article proposes a strong authentication mechanism for authenticating the user and the device using digital certificate and Device ID along with the conventional User ID - password. A Secure Video Store application implemented with the proposed strong authentication and showcased to leading telecom operators is described in this paper as a case study.","PeriodicalId":245765,"journal":{"name":"2009 IEEE 3rd International Symposium on Advanced Networks and Telecommunication Systems (ANTS)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114495133","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 : 2009-12-14DOI: 10.1109/ANTS.2009.5409887
N. Charbonneau, V. Vokkarane
We present our initial work for static manycast routing and wavelength assignment (MA-RWA) over wavelength-routed optical WDM networks. The goal is to route a set of static manycast requests over a wavelength-routed WDM network while minimizing the number of wavelengths required. This is the first time the problem has been investigated. We present a lambda path heuristic (LPH) to solve the MA-RWA problem and compare it to a simple shortest path manycast heuristic. LPH achieves a 20–30% improvement in required wavelengths over realistic networks.
{"title":"Static manycast routing and wavelength assignment over wavelength-routed optical WDM networks","authors":"N. Charbonneau, V. Vokkarane","doi":"10.1109/ANTS.2009.5409887","DOIUrl":"https://doi.org/10.1109/ANTS.2009.5409887","url":null,"abstract":"We present our initial work for static manycast routing and wavelength assignment (MA-RWA) over wavelength-routed optical WDM networks. The goal is to route a set of static manycast requests over a wavelength-routed WDM network while minimizing the number of wavelengths required. This is the first time the problem has been investigated. We present a lambda path heuristic (LPH) to solve the MA-RWA problem and compare it to a simple shortest path manycast heuristic. LPH achieves a 20–30% improvement in required wavelengths over realistic networks.","PeriodicalId":245765,"journal":{"name":"2009 IEEE 3rd International Symposium on Advanced Networks and Telecommunication Systems (ANTS)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121788777","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 : 2009-12-14DOI: 10.1109/ANTS.2009.5409892
M. Casoni, Alessio Sacchi
This paper investigates the performance of a multi-stage Clos architecture having a bufferless switch based on optical codes as basic switching element. This multi-stage switch is suitable as core node in OBS networks. Optical codes are used for coding incoming bursts in each switching element to perform the switching function. To this end it employs encoders and decoders and possible output contentions are solved in the wavelength domain by means of variable-input fixed-output wavelength converters.
{"title":"System design and evaluation of a large photonic switch based on optical codes for optical burst switched networks","authors":"M. Casoni, Alessio Sacchi","doi":"10.1109/ANTS.2009.5409892","DOIUrl":"https://doi.org/10.1109/ANTS.2009.5409892","url":null,"abstract":"This paper investigates the performance of a multi-stage Clos architecture having a bufferless switch based on optical codes as basic switching element. This multi-stage switch is suitable as core node in OBS networks. Optical codes are used for coding incoming bursts in each switching element to perform the switching function. To this end it employs encoders and decoders and possible output contentions are solved in the wavelength domain by means of variable-input fixed-output wavelength converters.","PeriodicalId":245765,"journal":{"name":"2009 IEEE 3rd International Symposium on Advanced Networks and Telecommunication Systems (ANTS)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123767157","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 : 2009-12-14DOI: 10.1109/ANTS.2009.5409850
Jung-Shyr Wu, Jiun-Yu Tu, Chiung-Fang Hsu
The Scalable Video Coding (SVC) provides the spatial, temporal, and quality scalability of SVC with which a terminal station can have different playback video quality dynamically according to the radio channel condition and the capacity of the terminal station. Under the concept of layer-separation of the OSI layer model, however, existing access network techniques are upper layer-unaware. While the traffic loading in the access network becomes heavy, the video quality degrades dramatically. In this paper, a cross multi-layer mechanism is proposed to let the MAC layer of an IEEE 802.16e network system become aware to the importance of decoding dependency of each Network Abstraction Layer unit. Besides, according to the feature of SVC, the concept of seamless service is mentioned in this paper as well. According to the simulation results, the playback video quality is improved significantly.
{"title":"QoS optimized cross multi-layer transmission for SVC coded video stream over IEEE 802.16e network","authors":"Jung-Shyr Wu, Jiun-Yu Tu, Chiung-Fang Hsu","doi":"10.1109/ANTS.2009.5409850","DOIUrl":"https://doi.org/10.1109/ANTS.2009.5409850","url":null,"abstract":"The Scalable Video Coding (SVC) provides the spatial, temporal, and quality scalability of SVC with which a terminal station can have different playback video quality dynamically according to the radio channel condition and the capacity of the terminal station. Under the concept of layer-separation of the OSI layer model, however, existing access network techniques are upper layer-unaware. While the traffic loading in the access network becomes heavy, the video quality degrades dramatically. In this paper, a cross multi-layer mechanism is proposed to let the MAC layer of an IEEE 802.16e network system become aware to the importance of decoding dependency of each Network Abstraction Layer unit. Besides, according to the feature of SVC, the concept of seamless service is mentioned in this paper as well. According to the simulation results, the playback video quality is improved significantly.","PeriodicalId":245765,"journal":{"name":"2009 IEEE 3rd International Symposium on Advanced Networks and Telecommunication Systems (ANTS)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122910337","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 : 2009-12-14DOI: 10.1109/ANTS.2009.5409886
G. Das, B. Lannoo, D. Pareit, C. Okonkwo, T. Koonen, D. Colle, I. Moerman, M. Pickavet, P. Demeester
In this paper we propose a new architecture and a novel media access protocol based on IEEE 802.11 for the home network. We use radio over fiber technology for our architecture where data multiplexing is considered in both wireless and wavelength domain. Our solution enhances the wireless bandwidth usage capability and can provide dynamic bandwidth allocation among users according to the user demands. Our proposed scheme also supports full range mobility for the users.
{"title":"A new architecture and MAC protocol for flexible radio over fiber home networks","authors":"G. Das, B. Lannoo, D. Pareit, C. Okonkwo, T. Koonen, D. Colle, I. Moerman, M. Pickavet, P. Demeester","doi":"10.1109/ANTS.2009.5409886","DOIUrl":"https://doi.org/10.1109/ANTS.2009.5409886","url":null,"abstract":"In this paper we propose a new architecture and a novel media access protocol based on IEEE 802.11 for the home network. We use radio over fiber technology for our architecture where data multiplexing is considered in both wireless and wavelength domain. Our solution enhances the wireless bandwidth usage capability and can provide dynamic bandwidth allocation among users according to the user demands. Our proposed scheme also supports full range mobility for the users.","PeriodicalId":245765,"journal":{"name":"2009 IEEE 3rd International Symposium on Advanced Networks and Telecommunication Systems (ANTS)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124023423","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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