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.
    Full-text · Conference Paper · Oct 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.
    Full-text · Article · Oct 2014 · Vehicular Communications
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    • "In [4], all RSUs are considered to be connected over fixed communication links. Another approach in [5] assumes that a distance of 2 to 3 kilometers separates adjacent RSUs. In our design, we adopt a hybrid RSU architecture in which some RSUs are directly wired to each other, others connect to the RSU network via the Internet, while a third group is both wired to other RSUs and have an Internet connection. "
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    ABSTRACT: The strong capabilities that exist in a Vehicular Ad hoc Network (VANET) has given birth to the concept of Vehicular Clouds, in which cloud computing services are hosted by vehicles that have sufficient resources to act as mobile cloud servers. In this paper, we design a system that enables vehicles in a VANET to search for mobile cloud servers that are moving nearby and discover their services and resources. The system depends on RSUs that act as cloud directories with which mobile cloud servers register. The RSUs share their registration data to enable vehicles to discover and consume the services of mobile cloud servers within a certain area. We evaluated the proposed system using the ns2 software and demonstrated through comparing the results to another mechanism the feasibility and efficiency of our system in terms of service discovery and service consuming delays and packet success ratio.
    Full-text · Article · Jun 2013 · IEEE Intelligent Transportation Systems Magazine
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