Composite web service is a combination of multiple abstract web services. To build a composite web service, the authors have to combine multiple abstract web services together may be in sequence or in parallel. On the fly to select the best web service from the multiple abstract web services available for the same purpose is ...
The CSMA/CA based random channel access mechanisms in Wireless Mesh Networks (WMNs), IEEE 802.11 DCF and EDCA, are inefficient to eliminate effectively hidden terminal and exposed terminal problems in multi-hop scenarios. In this paper, the authors propose efficient channel assignment and routing protocols for Multi-Radio Multi-Channel (MRMC) wireless mesh networks. These set of protocols are ...
The distributed mechanism of LEACH algorithm is used for cluster formation and cluster head selection, it may result in poor cluster structure in which some clusters contain a much larger number of nodes than others do. Furthermore, randomly choosing CHs lead to the fact that there is a high chance for one node to be ...
Wireless networks have long suffered from congestion. It occurs when source node transmits the data at a rate greater than that of a network device can accommodate. It causes the buffer on such devices to fill up and possibly overflow. It results in loss of packets. Most of the routing protocols which are currently in ...
Mobile Ad hoc NETwork (MANET) is an autonomous, self-configuring and infrastructure-less system in which various mobile nodes are connected by wireless links. In MANETs hello messages are periodically exchanged to maintain the connectivity of neighbor nodes. While discovering neighbor nodes, an unnecessary hello message causes the problem of battery drainage in MANET routing protocols like ...
Wireless sensor networks are helpful in places where conventional networks cannot be thought of as feasible options as the former provide an economical, sensing and computable solution for the environments. The factor of reliability of data transport in the fields of wireless sensor networks is a one that has many sides and the layers concerned ...
With various advancements in the field of computing, scalability, resource utilization and power savings is being given higher priorities. NoSQL database and cloud computing goes hand in hand when compared with SQL databases. The main advantage of NoSQL databases is agility. The demand for NoSQL database is growing because most of the cloud applications built, ...
Session Initiation Protocol (SIP) based Voice over Internet Protocol (VoIP) services has attained much attention over the last decade. SIP is an extensively used Internet protocol for real time communication and establishment of media sessions. However, it is vulnerable to several security attacks due to its open architecture and text-based nature of SIP messages. Also, ...