Cross-layer interaction and service mapping (CLIASM) was designed for achieving
QoS for
wireless network
A wireless network is a computer network that uses wireless data connections between network nodes.
Wireless networking is a method by which homes, telecommunications networks and business installations avoid the costly process of introducing c ...
.
P. Venkata Krishna et al., proposed a cross-layer QoS model called CLIASM for
MANET
A wireless ad hoc network (WANET) or mobile ad hoc network (MANET) is a decentralized type of wireless network. The network is ad hoc because it does not rely on a pre-existing infrastructure, such as routers in wired networks or access points ...
. This model proposes a back and forth flow mechanism for sharing information. A shared database is being utilized to enable layers share information though each layer is performing different function. Between two layers two interfaces are created to enable
flow of information on both sides. The model is implemented based on the division of network features according to layers as
application layer
An application layer is an abstraction layer that specifies the shared communications protocols and Interface (computing), interface methods used by Host (network), hosts in a communications network. An ''application layer'' abstraction is speci ...
metrics (ALM),
transport layer
In computer networking, the transport layer is a conceptual division of methods in the layered architecture of protocols in the network stack in the Internet protocol suite and the OSI model. The protocols of this layer provide end-to-end ...
metrics (TLM),
network layer
In the seven-layer OSI model of computer networking, the network layer is layer 3. The network layer is responsible for packet forwarding including routing through intermediate routers.
Functions
The network layer provides the means of transfe ...
metrics (NLM) and
MAC layer
In IEEE 802 LAN/MAN standards, the medium access control (MAC, also called media access control) sublayer is the layer that controls the hardware responsible for interaction with the wired, optical or wireless transmission medium. The MAC sublay ...
metrics (MLM). But in deploying several cross-layering approaches, one has to keep in mind the possibilities of occurrence of unintended interactions and side effects. Conflicting interactions may create stability problems and result performance degradation.
[portal.acm.org/citation.cfm?id=1656040]
References
Network performance
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