Wireless LLC protocol [Expert Guide]

Last updated : Sept 4, 2022

Current : 1898

What is LLC in Wi Fi technology?

The logical link control (LLC) is the upper sublayer of the data link layer of the open system interconnections (OSI) reference model for data transmission. It acts act an interface between the network layer and the medium access control (MAC) sublayer of the data link layer.

What is LLC and MAC in networking?

Logical Link Control (LLC) sublayer provides the logic for the data link. Thus, it controls the synchronization, flow control, and error checking functions of the data link layer. â– Media Access Control (MAC) sublayer provides control for accessing the transmission medium.

What is the difference between MAC and LLC?

The MAC layer handles interfacing with the physical layer while the LLC layer multiplexes and manages flow and error control.

What is the function of LLC layer?

The Logical Link Control (LLC) sublayer provides the logic for the data link; thus it controls the synchronization, flow control, and error-checking functions of the data link layer.

Is LLC a protocol?

Logical Link Control (LLC, IEEE 802.2) protocols as its transport protocol: Ethernet: LLC can be used for packets on Ethernet networks, although many protocols don't use it when running atop Ethernet. IEEE_802. 11: LLC is used for data packets on IEEE_802.

What is LLC connection type?

In the IEEE 802 reference model of computer networking, the logical link control (LLC) data communication protocol layer is the upper sublayer of the data link layer (layer 2) of the seven-layer OSI model. The LLC sublayer acts as an interface between the media access control (MAC) sublayer and the network layer.

What is the purpose of MAC protocol?

Media access control (MAC) protocols enforce a methodology to allow multiple devices access to a shared media network. Before LANs, communication between computing devices had been point-to-point. That is, two devices were connected by a dedicated channel.

What is MAC in wireless communication?

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.

What are the uses of LLC in GPRS?

LLC (Logical Link Control) layer protocol is a procedure for packet data transfer between a MS and SGSN(Serving GPRS Support Node). This layer is specified in 3GPP 44.064. LLC is intended for use with both acknowledged and unacknowledged data transfer.

What is Media Access Control responsible for?

What is Media Access Control? A media access control is a network data transfer policy that determines how data is transmitted between two computer terminals through a network cable. The media access control policy involves sub-layers of the data link layer 2 in the OSI reference model.

Which layer of OSI is broken down into MAC and LLC?

The medium access control (MAC) is a sublayer of the data link layer of the open system interconnections (OSI) reference model for data transmission.

What are data link layer protocols?

Data-link protocols specify how devices detect and recover from such collisions, and may provide mechanisms to reduce or prevent them. Examples of data link protocols are Ethernet, Point-to-Point Protocol (PPP), HDLC and ADCCP.

What is characteristics of the LLC sublayer?

It provides the logical addressing required that identifies the device. It provides delimitation of data according to the physical signaling requirements of the medium.

What is the purpose of Layer 2 LLC sublayer?

What is the purpose of the Layer 2 LLC sublayer? It is used to handle multiplexing, flow and error control, and reliability.

Why flow control is necessary?

Flow control is important because it is possible for a sending computer to transmit information at a faster rate than the destination computer can receive and process it.

What is the format of LLC header?

LLC header. The 802.2 header includes two eight-bit address fields, called service access points (SAP) or collectively LSAP in the OSI terminology: SSAP (Source SAP) is an 8-bit long field that represents the logical address of the network layer entity that has created the message.

What IEEE 802.2 protocol?

The IEEE 802.2 standards for Logical Link Control define a programming interface between that part of the communications software that controls the network interface card (the Media Access Control and Physical Medium Dependent components) and the overlying protocol stack (IP, NetBIOS, NetWare, etc.).

What is the LLC SNAP header?

The SNAP header is used when the LLC protocol carries IP packets and contains the information which would otherwise have been carried in the 2-byte MAC frame type field.

What is LLC and VC Mux?

Virtual circuit multiplexing or VC-MUX is one of the two (the other being LLC encapsulation) mechanisms for identifying the protocol carried in ATM Adaptation Layer 5 (AAL5) frames specified by RFC 2684, Multiprotocol Encapsulation over ATM.

What is a logical link mean?

In analysis, you prove your ideas by explaining a series of ideas that lead to the conclusion you are hoping for. A logical link is a connector between pieces of analysis. This can also be applied to connecting more than one argument together to form a larger picture, or when presenting complicated refutation.

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Comment by Etha Copper

hi guys welcome to another episode of learn technology in five minutes by maker demi this is teja sweeney and i am a part of the instructor team at maker demi in this episode you will learn how to choose the right wireless protocol for your iot or embedded project with technologies like iot percolating its way into almost every industry today there has been an increase in the demand and usage of wireless protocols used in the same as a result there are a variety of wireless technologies that are available for use in iot and related projects if you are an iot enthusiast you would have come across and used wireless technologies such as wi-fi bluetooth zigbee and lora other than these there are some less familiar wireless technologies such as li-fi ltem nbiot and more before we understand how to choose the right wireless protocol let us first see why we need to do this why can't we pick a random wireless protocol for our iot projects let us understand this with an example say you are developing a smart agriculture system and you want to deploy this on a farm in a village nearby you decide to use wi-fi to collect temperature and humidity data from the sensors deployed throughout the agricultural area while this may work perfectly well in a city with continuous access to wi-fi you may not be able to get the same results in a remote rural form such locations may or may not have access to a fast and reliable wi-fi network thus choosing the right wireless protocol for specific iot applications is very important having understood this let us now look at some factors that you should consider while selecting a wireless technology while making a choice of a wireless protocol you are making a trade-off between the bandwidth range power and cost while the bandwidth and range are decided based on the application the cost and power consumption must be minimized as much as possible so based on these parameters let us now proceed to understand which wireless protocol to use in such different scenarios first how much data needs to be transmitted in your project in case you want to send large amounts of data you can make use of wi-fi technology wi-fi offers high bandwidth and a good range for data transmission on the downside wi-fi modules consume relatively higher power and are expensive alternatively if you want to send a large amount of data and are only developing projects for academic purposes then you can make use of the li-fi technology li-fi or light fidelity is a bi-directional wireless system that transmits data through infrared light or led as light travels extremely fast li-fi allows faster data transmissions and internet connections moving on let us say you only want to transmit small amounts of data then the next question is what is the range of data transmission needed if you only want data transmission over a short range you can make use of technologies like bluetooth or rfid rfid or radio frequency identification as the name suggests makes use of radio frequency waves for communication this can be used for very short-range communications for short-range communications in meters bluetooth technology can be used in case you need low latency you can use the bluetooth classic or if you prefer to have lower power consumption you can make use of ble or bluetooth low energy ble is an ideal choice for applications that do not require continuous connection but depend on high battery life if your project needs a little more range for data transmission and you are willing to compromise on the data rate you can make use of the zigbee technology zigbee is a low power low data rate protocol that can be used to create personal area networks for small scale projects moving forward what if we need a very long range of data transmission for small amounts of data in this case in what environment will the system be deployed if your project is meant to be deployed in rural areas the best choice of wireless technology would be lora lora or long range wireless technology offers low data rate but long range and low power communication on the other hand if you are planning to deploy your system in an urban environment you can make use of cellular wireless technologies such as 2g 3g or 4g for small amounts of data if you want wider coverage as a trade-off for narrow bandwidth you can use wireless technologies such as nbiot or ltem nbiot or narrowband iot and ltem or long-term evolution for machines are low power wide area wireless networks that are designed for iot systems if you wish to learn more in depth about protocols such as nbiot bluetooth zigbee and lora i recommend you check out the link to the video shared in the description of this video with this i hope you have gained a fair idea of why and how to make the right choice of wireless protocol for your future projects that is all folks if you like this video smash the subscribe button and ring the bell to be updated about our future video releases

Thanks for your comment Etha Copper, have a nice day.
- Glinda Straface, Staff Member

Comment by calmatQ

Thanks for this interesting article

Thanks calmatQ your participation is very much appreciated
- Glinda Straface

About the author

Glinda Straface

I've studied ring theory at St. Norbert College in De Pere and I am an expert in mathematical economics. I usually feel impressed. My previous job was switchboard operator I held this position for 22 years, I love talking about medical science and photo: leslie cross. Huge fan of Kevin Hart I practice sledding and collect games.

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