Conference Paper

ABSRP - A Service Discovery Approach for Vehicular Ad-Hoc Networks

SITE, Univ. of Ottawa, Ottawa, ON
DOI: 10.1109/APSCC.2008.44 Conference: Proceedings of the 3rd IEEE Asia-Pacific Services Computing Conference, APSCC 2008, Yilan, Taiwan, 9-12 December 2008
Source: IEEE Xplore


A vehicular ad hoc network (VANET) is a network of intelligent vehicles that communicate with other vehicles in the network. The main objective of VANET is to provide comfort and safety for passengers. In addition, various transaction based services, such as information about gas prices, restaurant menu, and discount sale, can be provided to drivers. In order to make these services available, there is a need for an efficient service discovery protocol. In this paper, we propose a new protocol called Address Based Service Resolution Protocol (ABSRP) to discover services in vehicular ad-hoc networks. As most of the transaction based services are provided by roadside units, we exploit their presence to perform service discovery. We utilize the unique address assigned to each service provider in order to discover a route to that service provider. Our technique proactively distributes the service provider's address along with its servicing capabilities to other roadside units within a particular area. Each roadside unit will then utilize this information to service the request placed by the vehicles. If the service provider (destination node) is not reachable over the vehicular network, we propose to use a backbone network to service requests. Our approach is independent of the network layer routing protocol. We have evaluated the performance of our approach by using the Qualnet simulation tool.

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    • "However, their protocol is not capable of dealing with dense traffic scenarios and large number of requests. An Address Based Service Resolution Protocol (ABSRP) was proposed in [9]. The authors used IEEE 802.11a wireless interfaces for communication, and IP addresses for RSUs. "
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    ABSTRACT: Vehicular Ad hoc Networks (VANETs) support a large number of Intelligent Transportation System (ITS) applications, ranging from safety to non-safety purposes. Non-safety applications encompass comfort, infotainment and marketing of services. In order to promote business, alongside roads and highways, and reach to maximum number of customers, the Business Managers (for instance: gas stations, restaurants, hotels, parking lots, coffee shops, supermarkets, etc.) would need a mechanism to advertise their services using a third party broker. Moreover, travellers (drivers, passengers) would need an efficient and cost effective way to discover these services, during their trips. However, the unique characteristics of VANETs (e.g., dynamic topology, high speed and densities, short inter-contact time, etc.) make the deployment of such applications a challenging task. This paper describes the use of the Opportunistic Service Discovery Protocol (OSDP) –a beaconing based protocol for roadside services discovery. We performed extensive simulation experiments to evaluate the performance of different phases of OSDP, under different traffic densities. The results concluded that: a) the number of advertisement packets, in a given region by different Road Side Units (RSUs), effect the success rate of receptions by moving vehicles; b) short inter-contact times (of around 1s) seem to be sufficient for a fast moving vehicle on a highway to receive at-least 70% of the advertisement packets from RSUs; c) the success rate of receiving response packets is highly affected by the density of neighbour vehicles; d) the model suggests that the system can be used to simulate several business models, including a number of advertisement points, their distances to the business's premises and duration that the packets are stored in the cache, etc.
    VEHICULAR 2015 : The Fourth International Conference on Advances in Vehicular Systems, Technologies and Applications, St. Julians, Malta; 10/2015
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    • "Address Based Service Resolution Protocol (ABSRP) [15] integrates a pull-based technique to discover services in VANETs. When a vehicle needs a service, it creates a service request with the specification of the type of service and the desired service area, and then transmits it to the nearest roadside unit, as shown in Fig. 4. The receiving roadside unit checks if it has proactively learned about the service provider. "
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    ABSTRACT: The rapid evolution of wireless communication capabilities and vehicular technology would allow traffic data to be disseminated by traveling vehicles in the near future. Vehicular Ad hoc Networks (VANETs) are self-organizing networks that can significantly improve traffic safety and travel comfort, without requiring fixed infrastructure or centralized administration. However, data dissemination in VANET environment is a challenging task, mainly due to rapid changes in network topology and frequent fragmentation. In this paper, we survey existing data dissemination techniques and their performance modeling approaches in VANETs, along with optimization strategies under two basic models: the push model, and the pull model. In addition, we present major research challenges.
    Vehicular Communications 10/2014; 1(4). DOI:10.1016/j.vehcom.2014.09.001
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    • "In the literature, there is a consensus that an RSU density between 0.16 and 0.4 would produce good system performance and acceptable packet delivery delay (0.4 RSUs/Km 2 in [39], 0.25 in [40], and between 0.16 and 0.39 in [23]). There is another work ([27]) that supposed that the average distance between two neighboring RSUs could stretch to about 3 km, which corresponds to an RSU density of 0.05 RSUs/Km 2 . "
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    ABSTRACT: Intervehicular communication lies at the core of a number of industry and academic research initiatives that aim at enhancing the safety and efficiency of transportation systems. Vehicular ad hoc networks (VANETs) enable vehicles to communicate with each other and with roadside units (RSUs). Service-oriented vehicular networks are special types of VANETs that support diverse infrastructure-based commercial services, including Internet access, real-time traffic management, video streaming, and content distribution. Many forms of attacks against service-oriented VANETs that attempt to threaten their security have emerged. The success of data acquisition and delivery systems depends on their ability to defend against the different types of security and privacy attacks that exist in service-oriented VANETs. This paper introduces a system that takes advantage of the RSUs that are connected to the Internet and that provide various types of information to VANET users. We provide a suite of novel security and privacy mechanisms in our proposed system and evaluate its performance using the ns2 software. We show, by comparing its results to those of another system, its feasibility and efficiency.
    IEEE Transactions on Vehicular Technology 02/2013; 62(2):536-551. DOI:10.1109/TVT.2012.2226613 · 1.98 Impact Factor
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