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In this paper, we propose an offline rollback traffic avoidance method for the snapshot routing in cyclic mobile networks. Since the snapshot routing tables are switched simultaneously, part of the traffic may be sent back on some links if the new routing path contains the same links but with reversed forwarding direction against the old one. To avoid the rollback traffic, we first formulate the rollback...
Advances in wireless communication and microelectronic devices technologies have achieved the success production of low-power micro-sensors, enabling the large scale deployment of wireless sensor networks (WSNs). In order to track objects energy efficiently in OTSNs, many methods have been proposed but the performance is still not satisfactory. In fact, improving the performance of flooding is necessary...
When a vehicle is moving fast in a highway, how to effectively reduce the handoff delay and maintain the connectivity of the vehicle to the Internet is an important issue. The existing IP passing protocol may be able to reduce the handoff delay and maintain the connectivity of the vehicle to the Internet when all the vehicles are connected. However, when the vehicle density is low or the speeds of...
UMTS networks allow multiple mobile users to access and share radio resource in High Speed Downlink Access (HSDPA). The HSDPA technique is proposed by 3GPP to maximize throughput and to enhance the downlink speed of data transmission in shared channels. In this paper, we propose a Two-Phase Packet scheduling Scheme for HSDPA. In designing of fast packet scheduling, we compromise delay and fairness...
This paper proposes a design and realization of a network security system based on unidirectional network data control technique and configurable Rijndael AES algorithm. The unidirectional control technique does not process the data downloaded from the server to the client side but checks the data that is uploaded to the server side according to certain security rules, which promises the client side...
At present, people's focus has shifted from the demand purchase to the value investments. The value becomes soul of marketing, which makes marketing research to be launched around the value. Through the introducing important intermediary of the relationship levels and related-party fit, discussing interaction among 4R, the relationship levels and related-party fit, so as to upgrade relationship value--4R...
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