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- G, Fodor, et al.
(författare)
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Network assisted device-to-device communications : Use cases, design approaches, and performance aspects
- 2014
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Ingår i: Smart Device to Smart Device Communication. - Cham (Svájc) : Springer. ; , s. 135-163
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Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- Network assisted device-to-device (D2D) communications have emerged as a means of increasing spectral and energy efficiency, reducing latency and creating a platform for proximity-based services. Application areas of D2D communications include cellular network offloading and coverage extension, proximity-based social networking, and providing national security and public safety (NSPS) in infrastructure-less situations. This broad range of applications has led to a large set of technical requirements that must be taken into account when designing physical layer algorithms, user and control plane protocols, and network architecture. In this chapter we review the key requirements and current approaches to network assisted service and device discovery, radio resource management and tuning the performance of integrated D2D, and cellular networks.
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- Ahmed, K. M., et al.
(författare)
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Groundwater quality contrasts between Upper and Lower Dupi Tila Aquifers in Megacity Dhaka, Bangladesh
- 2011
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Ingår i: Groundwater quality contrasts between Upper and Lower Dupi Tila Aquifers in Megacity Dhaka, Bangladesh. - 9781907161162 ; , s. 71-74
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Konferensbidrag (refereegranskat)abstract
- Dhaka is one of the fastest growing megacities of the world and is set to become the third largest by 2025. Currently about 86% of the municipal water supply comes from over 500 wells drilled in the Dupi Tila aquifers underlying the city. The Upper Dupi Tila aquifer (UDTA) is overexploited and a large part has been dewatered; abstractions from the lower Dupi Tila started only recently. Results of water analysis and EC surveys have been used to decipher the variations in groundwater quality in the UDTA and LDTA. EC surveys reveal a systematic deterioration of water quality in the vicinity of the Buriganga River in southeast Dhaka. The UDTA is more widely affected by anthropogenic processes than the LDTA, which still largely exhibits its intrinsic water quality characteristics. Regular monitoring and proper management practices are essential to protect the quality of this precarious resource.
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- Rizvi, S. M. Sarwarul Islam, et al.
(författare)
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Security of mobile agent in ad hoc network using threshold cryptography
- 2010
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Ingår i: World Academy of Science, Engineering and Technology: An International Journal of Science, Engineering and Technology. - 2010-376X .- 2070-3740. ; 46, s. 1039-1042
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Tidskriftsartikel (refereegranskat)abstract
- In a very simple form a Mobile Agent is an independent piece of code that has mobility and autonomy behavior. One of the main advantages of using Mobile Agent in a network is - it reduces network traffic load. In an, ad hoc network Mobile Agent can be used to protect the network by using agent based IDS or IPS. Besides, to deploy dynamic software in the network or to retrieve information from network nodes Mobile Agent can be useful. But in an ad hoc network the Mobile Agent itself needs some security. Security services should be guaranteed both for Mobile Agent and for Agent Server. In this paper to protect the Mobile Agent and Agent Server in an ad hoc network we have proposed a solution which is based on Threshold Cryptography, a new vibe in the cryptographic world where trust is distributed among multiple nodes in the network.
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