Application Level Performance Measurements of MultiConnectivity Options in Cellular Networks for Vehicular Scenarios Intelligent Transportation Systems (ITS) and vehicle passengers request for highspeed and reliable data access from vehicle to infrastructure networks. For example, passengers like to consume multimedia services and new use cases arise from ITS and connected vehicular services that require highspeed and reliable connectivity solutions. To achieve these requirements multiconnectivity is a viable solution to increase throughput and reliability. Such options exist on various layers. On the network access layer multiple antennas are deployed for transmitting and receiving data in parallel data streams; on the transport layer different network access opportunities are utilized by multipath protocols such as multipath TCP. At the present study, we evaluate performance metrics of these options in a realworld vehicular scenario. We quantify throughput, delay, and reliability improvements of using multiple antennas and multipath TCP and also indicate issues of multipath TCP. Further, we demonstrate performance improvements by the change of the congestion control protocol.

Towards Efficient Parallel Multipathing: A ReceiverCentric CrossLayer Solution to Aid Multipath TCP Applying Multipath TCP (MPTCP) towards transportlayer parallel multipath transmission to increase the throughput performance of mobile devices has attracted considerable attention. Significant results in this area have resulted in many highly promising solutions; however most of the existing solutions follow the conventional sendercentric design and the strict layering principle, without considering the fact that the receiveru0027s intelligence and crosslayer activities can result in distinct performance advantages. In this paper, we propose MPTCPRC, a receivercentric crosslayer solution to aid MPTCP towards efficient parallel multipath data transmission in a wireless environment. In MPTCPRC, the receiver performs path usage decision and crosslayer activity, by making use of its acquired firsthand knowledge of both transport layer and MAC layer, rather than only giving feedback to the sender then waiting for the decision. We evaluate and demonstrate the benefits of our proposal by simulations.