What Comes Under Layer 1 of Wireless Technology?

If you’re wondering what comes under layer 1 of wireless technology, you’re not alone. It can be confusing to keep track of all the different aspects of wireless networks. In this blog post, we’ll break down layer 1 and what it entails.

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Introduction to Layer 1 of Wireless Technology

In telecommunications, Layer 1 is the physical layer of the OSI model. It is responsible for transmission and reception of raw data over a medium. Physical medium attachment (PMA) sublayer is sometimes considered to be a part of Layer 1.

Layer 1 uses electrical impulses, light or electromagnetic waves to carry data streams. Switches and hubs operate on Layer 1.

Examples of Layer 1 technologies are:
-SONET/SDH
-ATM
-TDM
-PPP
-FDM
Wired Ethernet is an example of a Layer 1 technology that uses electrical impulses to carry data.

The Physical Layer

The OSI model (Open System Interconnection) is a conceptual model that characterizes and standardizes the communication functions of a telecommunication or computing system. It consists of seven layers, with each layer serving a specific purpose. The physical layer is the first layer of the OSI model and is responsible for the transmission and reception of unstructured raw data over a physical medium.

The Data Link Layer

Data link layer is the first layer of the seven-layer OSI model of computer networking. It is responsible for maintaining the link between two devices and enabling the transport of data between them. The data link layer is divided into two sub-layers:

The logical link control (LLC) sub-layer is responsible for error control and flow control at the data link level. It ensures that data is delivered error-free and in the correct sequence.

The media access control (MAC) sub-layer is responsible for managing access to the physical medium. It ensures that multiple devices can share the medium without interference.

The Network Layer

The first layer of the OSI model is the network layer. This layer is responsible for the creation and maintenance of logical network links between computer systems. Logical links are established by protocols that define how data should be formatted, addressed, and routed. The most common protocol in use today is TCP/IP, which is the basis for the Internet.

The Transport Layer

Under layer 1 of the OSI model, we have the physical layer. This is the layer that deals with the actual physical components of the network, including the cables, routers, and other devices. The transport layer is responsible for ensuring that data gets from one point to another without being lost or corrupted. It also provides a means for error correction if necessary.

The Session Layer

The session layer is a software layer in theseven-layer OSI model of computer networking. Its functions include managing connections between computers, ensuring that data is delivered in the correct sequence, and recovering from data transmission errors.

The Presentation Layer

The presentation layer is the sixth layer of the Open Systems Interconnection (OSI) model. The presentation layer is responsible for the translation, encoding and compression of data so that it can be presented to the user in an understandable format. This layer is also responsible for data encryption and decryption.

The Application Layer

The application layer is the highest layer in the Open Systems Interconnection (OSI) model, and provides a platform for application developers to create protocols and services. This is where protocols such as Hypertext Transfer Protocol (HTTP), Simple Mail Transfer Protocol (SMTP), and File Transfer Protocol (FTP) reside. The OSI model defines a blueprint for how data should be transmitted between two devices, and the application layer is responsible for delivering data to the user.

Summary

Layer 1 or the Physical layer is the first layer of the seven-layer OSI model of computer networking. This layer is responsible for physically connecting devices on a network using cables, NIC cards, hubs, bridges, switches, and routers.

Further Reading

This article offers a brief overview of layer 1 of the OSI model. For more information, please consult the following resources:

-The Open System Interconnection Model: Layers 1-7, by Mark Niemann-Ross (https://www.oreilly.com/library/view/the-open-system/0596009658/ch01.html)

-Layers in the OSI Model, by Bradley Mitchell (https://www.lifewire.com/layers-in-osi-model-817374)

-Layer 1 (Physical Layer), from Tutorials Point (https://www.tutorialspoint.com/layers_in_osi_model/layer_1_physical_layer.htm)