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Flows in software defined networking (SDN) can pass through multiple domains having separate controllers. A domain is interpreted as part of the network topology under a SDN controller. This necessitates negotiation between various domains, to meet the QoS requirements of flows. These QoS negotiations may be static or dynamic. The SDN domains may be wired or wireless. Though, there have been efforts...
Carrier Aggregation (CA) features will enhance Quality of Service (QoS) for the users as well as cell throughput of the LTE-Advanced (LTE-A) base-station (eNodeB). To deliver a high QoS for users, an eNodeB requires a well-designed and efficient CA enabled downlink scheduling algorithm. Enabling aggregation of multiple component carriers leads to huge power consumption compared with non-CA scenario...
An LTE-Advanced (LTE-A) Heterogeneous Network (HetNet) constitutes of a macro cell and small cells, where, the former acts as an overlay network and the latter as an underlay network. In HetNet, enabling Carrier Aggregation (CA) usually results in severe downlink interference at small cells from macro cell because of high powered transmissions from macro cell on over-lapping component carriers (co-channels)...
LTE uses the SC-FDMA radio access technology for its uplink data traffic transmission from the User Equipment (UE) to eNodeB. To the best of our knowledge the uplink MAC scheduling decisions at the eNodeB that have been proposed so far for Small Cell network are mostly based on single parameters like channel awareness, buffer status, or minimal power transmission. In this paper, we propose a novel...
Users run multiple applications simultaneously on single mobile device (MD) like mobile phone, tablet etc.. Utility and importance of different applications are not same and relative value depends on individual user. But in Internet architecture, available bandwidth is shared by applications equally. In wireless connection, fluctuation of bandwidth is common event and all applications are affected...
In Software Defined Network (SDN) flow rules for data packets in a session are decided in controller-nodes which are geographically away from data carrying nodes. The traverse time for request and control packets between controller-node and data-node causes delay in executing flow rule on packets. Flow rules are stored in data node for limited time to save expensive memory. Whenever some flow rule...
Nowadays QoS enabled real time services are demanding and dominating over Internet. However, providing end-to-end QoS requirement across Internet is still a challenge. With changing challenges and demands, service providers should be able to implement their strategic and business policies dynamically. Therefore current Internet architecture needs a change to support the present and future requirements,...
According to different priority based services, IEEE 802.16e WiMAX standard classifies packets as UGS, RTPS, eRTPS, nRTPS, BE. The standard treats all packets generated while browsing the internet as delay tolerant packets and classifies them as Best Effort (BE) packets. This includes BE packets generated while browsing secure websites. However, secure transactions are governed by time constraints...
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