Abstract:Mobile Ad Hoc Networks (MANETs) are wireless networks formed by several nodes communicating on a peer-to-peer basis without being connected to any fixed infrastructure. These nodes could be laptop computers, personal digital assistants, mobile phones or sensors dispersed in an area to measure certain data and send the information to a larger node. Where a source node and a destination node are not within direct range, they communicate through multi-hop routing, i.e. nodes in between them relay messages between source and destination. The routing protocol plays a key role in finding and maintaining the route in MANETs. Routing protocol can be a uni-path and multi-path. A multipath routing protocol is designed to increase the reliability in MANET. This research work focuses on Quality of Service (QoS) based evolution of multipath routing protocol. For this purpose, diverse type of simulation scenarios is designed to find the impact of mobility, increasing the number of nodes and pause time in MANETs. The results revealed that multipath routing protocol has comparatively less delay (percentage decrease of 81.52%). While unipath routing protocols have less packet drop ratio (percentage decrease of 47.78%) and routing overhead (percentage decrease of 99.30%).

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IJAIP fosters the exchange and dissemination of applications and case studies in the area of advanced intelligence paradigms among education and research professionals. The thrust of the journal is to publish papers dealing with the design, development, testing, implementation and management of advanced intelligent systems, and to provide guidelines in the development/management of these systems. IJAIP publishes archival articles and assessments of current trends, providing a medium for exchanging scientific research and technological achievements accomplished by the international community.

Long Term Evolution Advanced (LTE-A) is a broadband wireless technology that supports variety of services with different data rate. In order to achieve this the evolved Node B (eNB) uses different features provided in the 3GPP standards. Features like Carrier Aggregation (CA), Multiple input and Multiple output (MIMO) and Hybrid Automatic Repeat Request (HARQ) help to increase the throughput and spectral efficiency. In this paper, a novel two-level calendar disc algorithm with HARQ is introduced at the eNB for effectively scheduling real time and non-real time traffic with different service types. The algorithm also uses a burst profile management module that analyzes the current user profile and notifies the scheduler about the need to change in profile based on power boosting. The Calendar Disc Scheduler (CDS) is improved by adding HARQ retransmission index as a parameter in calculating the metric weight. The scheduler was tested for both adaptive and non-adaptive methods of HARQ in both synchronous and asynchronous modes. The proposed improved CDS scheduler was simulated with LTESim simulator and compared with calendar disc algorithm without HARQ improvements. Results show that the proposed scheduling method provides increased performance in terms of goodput, delay and spectral efficiency.

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