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Primary path reservation using enhanced slot assignment in TDMA for session admission.

Koneri Chandrasekaran S, Savarimuthu P, Andi Elumalai P, Ayyaswamy K - ScientificWorldJournal (2015)

Bottom Line: In such cases the QoS session is affected.Many TDMA based reservation mechanisms are proposed but need some improvement over slot reservation procedures.A network topology has been simulated and our approach proves to be a mechanism that admits the session effectively.

View Article: PubMed Central - PubMed

Affiliation: Department of Computer Science and Engineering, Tagore Engineering College, Chennai 600127, India.

ABSTRACT
Mobile ad hoc networks (MANET) is a self-organized collection of nodes that communicates without any infrastructure. Providing quality of service (QoS) in such networks is a competitive task due to unreliable wireless link, mobility, lack of centralized coordination, and channel contention. The success of many real time applications is purely based on the QoS, which can be achieved by quality aware routing (QAR) and admission control (AC). Recently proposed QoS mechanisms do focus completely on either reservation or admission control but are not better enough. In MANET, high mobility causes frequent path break due to the fact that every time the source node must find the route. In such cases the QoS session is affected. To admit a QoS session, admission control protocols must ensure the bandwidth of the relaying path before transmission starts; reservation of such bandwidth noticeably improves the admission control performance. Many TDMA based reservation mechanisms are proposed but need some improvement over slot reservation procedures. In order to overcome this specific issue, we propose a framework-PRAC (primary path reservation admission control protocol), which achieves improved QoS by making use of backup route combined with resource reservation. A network topology has been simulated and our approach proves to be a mechanism that admits the session effectively.

No MeSH data available.


Related in: MedlinePlus

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Related In: Results  -  Collection


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Mentions: (A) Route Request Phase. When a node Y receives a broadcast packet RREQ(S, D, id, b, X, path, NH) from a neighbour node X and if Y has not received the same packet before, then Algorithm 1 will be executed. As shown in Step 1, if NH does not have the node Y listed in it, then a path_temp will be created. Hence the corresponding parameter li′ that contains b time slots can be used by X to transmit to hi′ without collision. In Step 2, the temporary tables for sending and receiving SS_temp and RS_temp are used during the probing stage, in which the confirmed list is stored in original SS and RS. As the path is propagated for each slot of a node, the confirmed slot information is saved in the respective temporary tables SS_temp and RS_temp. This confirmed slot in respective node is carried over to next node that is visited and this will continue till the destination node.


Primary path reservation using enhanced slot assignment in TDMA for session admission.

Koneri Chandrasekaran S, Savarimuthu P, Andi Elumalai P, Ayyaswamy K - ScientificWorldJournal (2015)

© Copyright Policy - open-access
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4385671&req=5

Mentions: (A) Route Request Phase. When a node Y receives a broadcast packet RREQ(S, D, id, b, X, path, NH) from a neighbour node X and if Y has not received the same packet before, then Algorithm 1 will be executed. As shown in Step 1, if NH does not have the node Y listed in it, then a path_temp will be created. Hence the corresponding parameter li′ that contains b time slots can be used by X to transmit to hi′ without collision. In Step 2, the temporary tables for sending and receiving SS_temp and RS_temp are used during the probing stage, in which the confirmed list is stored in original SS and RS. As the path is propagated for each slot of a node, the confirmed slot information is saved in the respective temporary tables SS_temp and RS_temp. This confirmed slot in respective node is carried over to next node that is visited and this will continue till the destination node.

Bottom Line: In such cases the QoS session is affected.Many TDMA based reservation mechanisms are proposed but need some improvement over slot reservation procedures.A network topology has been simulated and our approach proves to be a mechanism that admits the session effectively.

View Article: PubMed Central - PubMed

Affiliation: Department of Computer Science and Engineering, Tagore Engineering College, Chennai 600127, India.

ABSTRACT
Mobile ad hoc networks (MANET) is a self-organized collection of nodes that communicates without any infrastructure. Providing quality of service (QoS) in such networks is a competitive task due to unreliable wireless link, mobility, lack of centralized coordination, and channel contention. The success of many real time applications is purely based on the QoS, which can be achieved by quality aware routing (QAR) and admission control (AC). Recently proposed QoS mechanisms do focus completely on either reservation or admission control but are not better enough. In MANET, high mobility causes frequent path break due to the fact that every time the source node must find the route. In such cases the QoS session is affected. To admit a QoS session, admission control protocols must ensure the bandwidth of the relaying path before transmission starts; reservation of such bandwidth noticeably improves the admission control performance. Many TDMA based reservation mechanisms are proposed but need some improvement over slot reservation procedures. In order to overcome this specific issue, we propose a framework-PRAC (primary path reservation admission control protocol), which achieves improved QoS by making use of backup route combined with resource reservation. A network topology has been simulated and our approach proves to be a mechanism that admits the session effectively.

No MeSH data available.


Related in: MedlinePlus