A connectionless approach to mobile ad hoc networks

Ho, Yen-Hung; Ho, Ai Hua; Hua, Kien A.; Hamza-Lup, G.L.

doi:10.1109/iscc.2004.1358403

Cited by 23 publications

(21 citation statements)

References 29 publications

(7 reference statements)

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“…The proposed CB-S technique focuses on improving vehicular communications, and can have many important applications. It can be used to reduce the high cost of request packets in routing protocols such as [3][4][5]. CB-S can also be used to reduce the overhead of disseminating network wide information, such as information about a particular event [1], to vehicles within a radius.…”

Section: Cell Broadcast For Street Environments (Cb-s)mentioning

confidence: 99%

“…On-board intelligent navigation systems would be able to process the evacuation plan and guide the motorists away from the incident in a coordinated manner. Another example application is reducing control overhead in routing protocols [2][3][4][5][6][7]. In these routing protocols, establishing a connection with a node requires either querying a location service [8,9] or broadcasting a message to search the entire network for the node.…”

Section: Introductionmentioning

confidence: 99%

“…In these routing protocols, establishing a connection with a node requires either querying a location service [8,9] or broadcasting a message to search the entire network for the node. The location service requires ongoing maintenance that is sensitive to the effect of high mobility and not needed when routing protocols such as [3,4,10] already provide a location update mechanism. For obtaining the location of a destination for the first time, these routing protocols can benefit from an efficient mechanism other than a simple Plain Flooding technique [11] that can cause a broadcast storm, especially in a high density environment [12].…”

Section: Introductionmentioning

confidence: 99%

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An Efficient Broadcast Technique for Vehicular Networks

Ho¹,

Ho²,

Hua³

et al. 2011

Journal of Information Processing Systems

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Abstract-Vehicular networks are a promising application of mobile ad hoc networks. In this paper, we introduce an efficient broadcast technique, called CB-S (Cell Broadcast for Streets), for vehicular networks with occlusions such as skyscrapers. In this environment, the road network is fragmented into cells such that nodes in a cell can communicate with any node within a two cell distance. Each mobile node is equipped with a GPS (Global Positioning System) unit and a map of the cells. The cell map has information about the cells including their identifier and the coordinates of the upper-right and lower-left corner of each cell. CB-S has the following desirable property. Broadcast of a message is performed by rebroadcasting the message from every other cell in the terrain. This characteristic allows CB-S to achieve an efficient performance. Our simulation results indicate that messages always reach all nodes in the wireless network. This perfect coverage is achieved with minimal overhead. That is, CB-S uses a low number of nodes to disseminate the data packets as quickly as probabilistically possible. This efficiency gives it the advantage of low delay. To show these benefits, we give simulations results to compare CB-S with four other broadcast techniques. In practice, CB-S can be used for information dissemination, or to reduce the high cost of destination discovery in routing protocols. By also specify the radius of affected zone, CB-S is also more efficient when broadcast to a subset of the nodes is desirable.

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Section: Cell Broadcast For Street Environments (Cb-s)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

An Efficient Broadcast Technique for Vehicular Networks

Ho¹,

Ho²,

Hua³

et al. 2011

Journal of Information Processing Systems

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“…A packet is forwarded to the next MN with shortest distance to the destination MN. Besides, CAM (Connectionless Approach for MANET) is a position-based approach proposed by Ho et al (2004Ho et al ( , 2006. CAM divides the geographical area into grids.…”

Section: Proactive or Table-driven Routing Algorithmmentioning

confidence: 99%

“…An example of ping-pong effect caused by local maximum problem OHLAR is a hybrid of position-based and connectionless approach. It is compared with the well-known position-based algorithm -LAR (Ko and Vaidya, 1998) and the connectionless approach -CAM (Ho et al, 2004(Ho et al, , 2006. The well-known on-demand routing algorithm -AODV (Perkins and Royer, 1999) is also compared here.…”

Section: Simulation Studiesmentioning

confidence: 99%

A Position-Based Connectionless Routing Algorithm for MANET and WiMAX under High Mobility and Various Node Densities

Liao¹,

Lin²,

County³

2008

Information Technology J.

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Many routing algorithms were proposed for mobile ad hoc network (MANET). They can be classified into two categories: connection-oriented and connectionless. Their performance is usually limited under high mobility or various node densities. A connectionless algorithm even encounter a local maximum problem (also called void problem) under low node density. The problem causes a data packet cannot be transmitted to the destination mobile node (MN). Therefore, an improved OHLAR (one-hop location-aided routing) algorithm is proposed in this paper. It is designed for the hybrid environment consisting of MANET and WiMAX networks. WiMAX network is used to overcome the broadcast storm of location interchange among MNs under high mobility or high node density. It can also resolve the local maximum problem under small or low node density. Simulation results show that the improved OHLAR can keep high delivery ratio, low end-to-end delay, and low control overhead compared to the basic OHLAR and other routing algorithms, including AODV, LAR, and CAM.

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Handling high mobility in next‐generation wirelessad hocnetworks

Hua

2009

Int J Communication

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SUMMARYNext-generation ad hoc networks need to be able to handle high mobility in order to support a wide range of emerging applications such as vehicular networks. Maintaining communication links of an established communication path that extends between source and destination nodes is a significant challenge in mobile ad hoc networks due to the movement of the mobile nodes. In particular, such communication links are often broken under a high mobility environment. Although a new communication route can be established when a break in the communication path occurs, repeatedly reestablishing new routes incurs delay and substantial overhead. To address this limitation, we introduce the Virtual Router abstraction in this paper. A virtual router is a dynamically created logical router that is associated with a particular geographical area. Its routing functionality is provided by the physical nodes (i.e. mobile devices) currently within the geographical region served by the virtual router. These physical nodes take turns in forwarding data packets for the virtual router. In this environment, data packets are transmitted from a source node to a destination node over a series of virtual routers. Since virtual routers do not move, this scheme is much less susceptible to node mobility. We give simulation results to demonstrate the effectiveness of this technique in handling high mobility. They show that the Virtual Router approach can achieve several times better performance than the traditional approach based on physical routers (i.e. relay nodes).

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A connectionless approach to mobile ad hoc networks

Cited by 23 publications

References 29 publications

An Efficient Broadcast Technique for Vehicular Networks

An Efficient Broadcast Technique for Vehicular Networks

A Position-Based Connectionless Routing Algorithm for MANET and WiMAX under High Mobility and Various Node Densities

Handling high mobility in next‐generation wirelessad hocnetworks

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