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OPTIMIZED GATEWAY DISCOVERY IN HYBRID MANETS

2009
Journal from gdlhub / 2017-08-14 11:52:32
Oleh : A. J. Yuste , A.Triviño , F.D. Trujillo , E. Casilari , A. Díaz-Estrella, International Journal of Computer Networks & Communications (IJCNC
Dibuat : 2012-06-23, dengan 1 file

Keyword : Internet, Manet, Interconnection, wireless communications
Subjek : OPTIMIZED GATEWAY DISCOVERY IN HYBRID MANETS
Url : http://airccse.org/journal/cnc/1009s8.pdf
Sumber pengambilan dokumen : Internet

Mobile users are expected to demand access to the Internet anywhere and anytime. In a MANET context,


a device which is about to connect to external hosts needs the route to the element which communicates


the MANET with the Internet. This element is the Internet Gateway. To inform about its presence as well


as about some configuration parameters, the Gateway sends MRA messages. In a similar way to ad hoc


routing protocols, the Gateway can generate the messages on demand (reactively), periodically


(proactively) or combining both previous strategies in a hybrid gateway discovery. Specifically, in the


hybrid gateway discovery, the Gateway periodically sends the MRA messages in a restricted area. The


nodes that are outside this area demand the Gateway information reactively. This gateway discovery


requires the setting of the number of hops that define the proactive area, also called the TTL value.


Network performance can be improved when the Gateway uses information such as the position of the


sources to adjust the TTL value. In this paper, we transfer the decision about the dimensions of the


proactive zone to the mobile nodes so more network conditions are taken into account. Simulation results


show that the proposed gateway discovery outperforms other hybrid gateway discovery schemes.

Deskripsi Alternatif :

Mobile users are expected to demand access to the Internet anywhere and anytime. In a MANET context,


a device which is about to connect to external hosts needs the route to the element which communicates


the MANET with the Internet. This element is the Internet Gateway. To inform about its presence as well


as about some configuration parameters, the Gateway sends MRA messages. In a similar way to ad hoc


routing protocols, the Gateway can generate the messages on demand (reactively), periodically


(proactively) or combining both previous strategies in a hybrid gateway discovery. Specifically, in the


hybrid gateway discovery, the Gateway periodically sends the MRA messages in a restricted area. The


nodes that are outside this area demand the Gateway information reactively. This gateway discovery


requires the setting of the number of hops that define the proactive area, also called the TTL value.


Network performance can be improved when the Gateway uses information such as the position of the


sources to adjust the TTL value. In this paper, we transfer the decision about the dimensions of the


proactive zone to the mobile nodes so more network conditions are taken into account. Simulation results


show that the proposed gateway discovery outperforms other hybrid gateway discovery schemes.

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