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A Novel Distributed QoS Control Scheme for Multi-Homed Vehicular Networks
Abstract
Resource availability in vehicular mobile networks fluctuates due to wireless channel fading and network mobility. Multi-homed mobile networks require a Quality-of-Service (QoS) control scheme that can select a routing path to guarantee high quality of communications with Correspondent Nodes (CNs) while using the maximum available bandwidth of wireless and radio communication technologies. In this chapter, the authors develop an intelligent distributed QoS control scheme which inter-operates between mobile routers, managing vehicular networks mobility, and Road Communication Gateways (RCGs). This proposed scheme manages Vehicle-to-Infrastructure (V2I) communications through enabling multi-homed vehicular networks to optimally distribute traffic among egress links of their mobile routers based on vehicular communication policies and available bandwidth and performance metrics of selected routing paths. This scheme considers the data control plane as a collaborative entity and specifies detailed operations to be performed in the mobile routers and RCGs. Simulation experiments show that the proposed scheme can improve the Congestion Window (CWND) of TCP and the e2e packet loss of video traffic, despite network mobility. It also guarantees the service parameter settings of uplink and downlink connections while achieving reasonable utilization efficiency of network resources and fairly sharing them.
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