{"title":"Communications quality of service for ad-hoc mobile optical free-space networks","authors":"I. Cardei, A. Pavan, R. Bettati","doi":"10.1109/CCNC.2006.1593004","DOIUrl":"https://doi.org/10.1109/CCNC.2006.1593004","url":null,"abstract":"Mobile Optical Free Space networks are an emerg- ing technology that will offer low-delay and high speed con- nectivity using air-borne and ground wireless laser terminals. The time-variable link capacity and dynamic topology make Quality of Service provisioning a difficult problem. We present an architecture for end-to-end statistical delay guarantees. We describe a delay model that uses the concept of virtual traffic to accommodate link capacity variations and transient outages. A mechanism for deploying dependable TCP services is imple- mented in this QoS-enabled network. The primary-backup TCP replication mechanism is supported by the routing infrastructure and allows transparent server replication. We illustrate perfor- mance improvements with simulation results.","PeriodicalId":194551,"journal":{"name":"CCNC 2006. 2006 3rd IEEE Consumer Communications and Networking Conference, 2006.","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132567970","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The need for rules of engagement applied to wireless body area networks","authors":"S. Warren, E. Jovanov","doi":"10.1109/CCNC.2006.1593184","DOIUrl":"https://doi.org/10.1109/CCNC.2006.1593184","url":null,"abstract":"Wireless body area networks (WBANs) and their supporting information infrastructures offer unprecedented opportunities to monitor state of health without constraining wearer activities. To increase acceptance of personal monitoring technology while lowering equipment cost, advances must be made in portability, power efficiency, security, and system- and device-level interoperability. This paper addresses the needs of future point-of-care environments that will employ adhoc WBANs for patient monitoring and treatment, emphasizing the need for strict rules of engagement that govern ad-hoc interactions, device associations, and security protocols. It then summarizes the use cases and constraints that will help to formulate rules of engagement for smart, interoperable components that operate within a distributed medical monitoring environment populated by WBANs and other local sensors.","PeriodicalId":194551,"journal":{"name":"CCNC 2006. 2006 3rd IEEE Consumer Communications and Networking Conference, 2006.","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133718243","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A GA approach to the optimal placement of sensors in wireless sensor networks with obstacles and preferences","authors":"Yong Xu, Xingting Yao","doi":"10.1109/CCNC.2006.1593001","DOIUrl":"https://doi.org/10.1109/CCNC.2006.1593001","url":null,"abstract":"The wireless sensor network (WSN) has recently become an intensive research focus due to its potential applications in many areas. In this paper, we propose a new and efficient genetic algorithm (GA) to the optimal placement of sensors in a grid area with obstacles and preferences to minimize the number of sensors. A new sensor detection model is also introduced in this paper. Experiments show that our algorithm is able to achieve better results than previous heuristic algorithms.","PeriodicalId":194551,"journal":{"name":"CCNC 2006. 2006 3rd IEEE Consumer Communications and Networking Conference, 2006.","volume":"204 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115722298","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Knowledge base design for network service composition using semantic web languages","authors":"N. Nishiyama, K. Nishikawa, Y. Nakamura, F. Ito","doi":"10.1109/CCNC.2006.1593256","DOIUrl":"https://doi.org/10.1109/CCNC.2006.1593256","url":null,"abstract":"We propose a knowledge base design by using Semantic Web languages to provide automatic service composition for network operation support. A knowledge base is designed based on the Shared Information/Data (SID) model described in OWL. In this design, a Service in the SID model (e.g., QoS) is defined as a network service that represents a logical functionality of resources having some operation services. An operation service is defined as an OWL-S Service for operating each network service. In addition, constraints on resources that implement particular network services (e.g., QoS on Trails) having particular operation services are studied. We used the proposed method to construct a practical knowledge base for a specific QoS services case. As a result, we verified that reasoning on the constraints works successfully by using a general reasoning tool.","PeriodicalId":194551,"journal":{"name":"CCNC 2006. 2006 3rd IEEE Consumer Communications and Networking Conference, 2006.","volume":"357 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115936833","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A heuristic for bandwidth allocation and management to maximize user satisfaction degree on multiple MPLS paths","authors":"Zheng-Yu Wu, Q. Yin","doi":"10.1109/CCNC.2006.1592983","DOIUrl":"https://doi.org/10.1109/CCNC.2006.1592983","url":null,"abstract":"This paper presents a dynamic bandwidth manage- ment scheme for real-time traffic on multiple MPLS paths. We first propose a type of utility function to describe the relationship between end user's satisfaction degree and resources allocated to user's application. Then a heuristic is introduced to perform admission control, path selection and load balancing based on the utility function to maximize the sum of the satisfaction degree of all users. Performance of our heuristic is compared with existing multiple paths routing algorithms. Simulation results show that our scheme can achieve higher total utility and lower blocking probability than conventional algorithms.","PeriodicalId":194551,"journal":{"name":"CCNC 2006. 2006 3rd IEEE Consumer Communications and Networking Conference, 2006.","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114310579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Detection of the guard interval length in OFDM systems","authors":"L. Zou","doi":"10.1109/CCNC.2006.1593198","DOIUrl":"https://doi.org/10.1109/CCNC.2006.1593198","url":null,"abstract":"Orthogonal Frequency Division Multiplexing (OFDM) has attracted more and more interest in wireless multimedia broadband communications. The length of guard interval is a very important parameter in OFDM systems. The optimal value of this parameter varies as environment changes. In a traditional system, the transmitters need additional signals to inform the receiver when the parameter changes. In this paper, we propose a low-complexity method, which can detect the length of guard interval (GI) at the receiver without additional signaling. The introduction of this method reduces the additional signaling and thus simplifies OFDM systems. Both theoretical analysis and simulation result show that the proposed method has good performance. The detector designed according to the proposed method works almost ideal for Signal-to-Noise Ratio (SNR) values above 3dB over AWGN and Rayleigh Channels.","PeriodicalId":194551,"journal":{"name":"CCNC 2006. 2006 3rd IEEE Consumer Communications and Networking Conference, 2006.","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114432311","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Ultra-wideband peak and average power limits","authors":"C. Corral, S. Emami, G. Rasor","doi":"10.1109/CCNC.2006.1593070","DOIUrl":"https://doi.org/10.1109/CCNC.2006.1593070","url":null,"abstract":"Ultra-wideband (UWB) emissions are analyzed in relation to the recent FCC waiver. The FCC waiver allows average and peak power measurements to be made in \"normal\" operating mode which can include hopped or gated signals. It is shown that signals with low peak-to-average power benefit most from gating to increase peak power and improve system performance in some fashion. Multi-band OFDM (MB-OFDM) and direct sequence UWB (DS-UWB) modulations for the IEEE 802.15 task group 3a alternative physical layer in wireless per- sonal area network (WPAN) standard are compared. It is shown that DS-UWB has significantly more peak power headroom than MB-OFDM which can be used to extend range or battery life.","PeriodicalId":194551,"journal":{"name":"CCNC 2006. 2006 3rd IEEE Consumer Communications and Networking Conference, 2006.","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114602096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Handling NAT traversal and mobility for multimedia traffic","authors":"N. Gaylani, Y. M. Erten","doi":"10.1109/CCNC.2006.1592998","DOIUrl":"https://doi.org/10.1109/CCNC.2006.1592998","url":null,"abstract":"Network Address Translator (NAT) traversal is a problem for many applications because a host in a private network cannot be contacted by a node which is outside this network unless the communication is initiated by the host itself. This restriction poses further problems when one of the hosts moves during an active session to a new location which is also behind a NAT. In this study we have proposed solutions to the above problems based on Mobile IP and SIP messaging. Our solutions are based on hole punching and the assumption that the hosts already know the details of each other. Hence it will not be required to consult the proxy or location servers when reestablishing the communication and this should reduce the required handoff time. I. INTRODUCTION The increase in the number of hosts connected to the Internet has almost exhausted the address space available in IPv4 and users are forced to employ private addresses at their office locations and home networks. The global IP addresses they need to access the Internet are provided by Network Address Translators (NAT) which map the private address to a global IP address:port pair. NATs allow users to share a limited number of global IP addresses by assigning different port numbers to different connections. This approach could be preferred even if there were enough addresses available, as it provides a security mechanism keeping unwanted traffi ca way from the local network. Using NATs, however, can be a problem when it comes to applications like Voice over IP (VoIP). As the hosts behind a NAT do not have global IP addresses, they are not accessible from the Internet unless they initiate a session. Hence calling users behind NATs requires extra effort and many different approaches have been proposed to solve the problems intro- duced due to NAT usage. These will be summarized in the proceeding sections. The other issue related to the NAT problem arises when the terminals are mobile. When a user who is behind a NAT moves to a new location which is also served by a NAT, it is a problem to continue the communication without an interruption. There has been various proposals to solve this problem of seamless handoff in case of mobility but they usually assume that at least one of the parties are using a global IP address. The case where the mobile host moves to a new network also served by a NAT is usually avoided. In this study we propose a mechanism to reestablish a connection when the nodes are moving between networks. Our study involves the case when the visited network is also using a NAT. Hence both parties are behind different NATs even after the move. We propose two solutions; one based on Session Initiation Protocol (SIP) messages and the other Mobile IP. In both cases, as the mobile node knows the location and the IP address of the stationary node, session reestablishment is expected to take less time than the initial connection setup. We assume that UDP packets are being exchanged throughout th","PeriodicalId":194551,"journal":{"name":"CCNC 2006. 2006 3rd IEEE Consumer Communications and Networking Conference, 2006.","volume":"212 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117307449","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"An energy efficient 3-dimensional wireless sensor cover","authors":"M. Watfa, S. Commuri","doi":"10.1109/CCNC.2006.1593180","DOIUrl":"https://doi.org/10.1109/CCNC.2006.1593180","url":null,"abstract":"A Wireless Sensor Network (WSN) is an ad-hoc network composed of densely-populated tiny electronic sensing devices, distributed over an area or volume. One of the fundamental issues in sensor networks is the coverage problem. In this paper, contrary to existing techniques, the coverage problem in a three dimensional space is rigorously analyzed. Given a distribution of sensor nodes, an algorithm to choose a subset of working nodes for full coverage is derived. A computationally efficient algorithm to check for complete coverage is also proposed.","PeriodicalId":194551,"journal":{"name":"CCNC 2006. 2006 3rd IEEE Consumer Communications and Networking Conference, 2006.","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122111210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Handling concurrent admission control in multiservice IP networks","authors":"S. R. Lima, P. Carvalho, V. Freitas","doi":"10.1109/CCNC.2006.1592980","DOIUrl":"https://doi.org/10.1109/CCNC.2006.1592980","url":null,"abstract":"Comunicacao apresentada na \"Consumer Communications & Networkin Conference 2006\", Las Vegas, Nevada, USA, 8-10 Janeiro 2006.","PeriodicalId":194551,"journal":{"name":"CCNC 2006. 2006 3rd IEEE Consumer Communications and Networking Conference, 2006.","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125925419","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}