ROSSI, MICHELE · Research Padua Archive (University of Padua) · 2011
In digital telecommunication systems the link layer is responsible for the transmission of data streams over point to point links. It performs framing of higher layer packets into link layer packet data units (PDUs) and can perform packet error recovery by exploiting ARQ mechanisms. In addition, the link layer also implements channel access procedures, which are often tightly coupled with the adopted ARQ scheme. Operations at this layer are essential for reliable and efficient transmissions over noisy and possibly shared links. We observe that the QoS at the application layer is highly dependent on the combination of techniques that we use at this layer as well as on the way we configure them. In particular, the following techniques play a fundamental role in the link layer: 1) the selected retransmission policy, 2) the feedback strategy that is used, at the receiver, to request the retransmissions of lost packets, 3) the channel access mechanism, 4) adaptive behavior in terms of data frame length (as a function of the error rate) as well as 5) advanced features such as combined ARQ and coding (for throughput enhancement). This chapter will give a solid introduction to points 1-4, will discuss some techniques related to point 5 and will cover the data link layer techniques used in Ethernet, IEEE~802.11 and Bluetooth.
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Martin H. Weik · 2000
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Truck Bus Control and Communications Network Committee · 2022
<div class="section abstract"> <div class="htmlview paragraph">The SAE J1939 documents are intended for light, medium, and heavy-duty vehicles used on or off road, as well as appropriate stationary applications which use vehicle derived components (e.g., generator sets). Vehicles of interest include, but are not limited to, on- and off-highway trucks and their trailers, construction equipment, and agricultural equipment and implements.</div> <div class="htmlview paragraph">The purpose of these documents is to provide an open interconnect system for electronic systems. It is the intention of these documents to allow Electronic Control Units to communicate with each other by providing a standard architecture.</div> <div class="htmlview paragraph">This particular document, SAE J1939-21, describes the data link layer using the Classical Extended Frame Format (CEFF) with 29-bit IDs, as defined in ISO 11898-1, December 2015. For SAE J1939, no alternative data link layers are permitted.</div></div>
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Truck and Bus Control and Communications Network Committee · 1998
<div class="section abstract"> <div class="htmlview paragraph">As described in the parent document, SAE J1939, there are a minimum of seven documents required to fully define a SAE J1939 network. This particular document, SAE J1939-21, describes a Data Link Layer using the CAN protocol with 29 bit Identifiers. For SAE J1939, no alternative data link layers are permitted.</div></div>
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Martin H. Weik · 2000
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Hooman Honary, Honary Hooman, A Hardware et al. · 1996
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Truck and Bus Control and Communications Network Committee · 2015
<div class="section abstract"> <div class="htmlview paragraph">The SAE J1939 documents are intended for light, medium, and heavy-duty vehicles used on or off road as well as appropriate stationary applications which use vehicle derived components (e.g., generator sets). Vehicles of interest include, but are not limited to, on- and off-highway trucks and their trailers, construction equipment, and agricultural equipment and implements.</div> <div class="htmlview paragraph">The purpose of these documents is to provide an open interconnect system for electronic systems. It is the intention of these documents to allow Electronic Control Units to communicate with each other by providing a standard architecture.</div> <div class="htmlview paragraph">This particular document, SAE J1939-21, describes the data link layer using the CAN protocol with 29-bit Identifiers. For SAE J1939 no alternative data link layers are permitted.</div></div>
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E. Arthurs, B. W. Stuck · 1981
ETHERNET) on each station that is attempting to transmit, this access policy makes it more likely a successful message transmission will occur, and in less time, than the published Version 1.0. Theoretical analysis substantiates these claims. 14
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Kristof Obermann, Martin Horneffer · 2013
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Truck and Bus Control and Communications Network Committee · 1994
<div class="section abstract"> <div class="htmlview paragraph">As described in the parent document, SAE J1939, there are a minimum of seven documents required to fully define a SAE J1939 network. This particular document, SAE J1939/21, describes a Data Link Layer using the CAN protocol with 29 bit Identifiers. For SAE J1939 no alternative data link layers are permitted.</div></div>
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Chris Carthern, William Julius Wilson, Richard Bedwell et al. · Apress eBooks · 2015
This chapter discusses protocols associated with the data link layer. The protocols covered are Address Resolution Protocol (ARP), Reverse Address Resolution Protocol (RARP), link layer functions, Link Layer Discovery Protocol (LLDP), and Cisco Discovery Protocol (CDP). As mentioned earlier, the data link layer must ensure that messages are transmitted to devices on a LAN using physical hardware addresses, and they also must convert packets sent from the network layer, and convert them into frames to be sent out to the physical layer to transmit. The data link layer converts packets into frames, which adds a header that contains the physical hardware device of the source and the destination address, flow control, and a footer with the checksum data (CRC). We are going to dive deeply into this layer.
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2007
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Kristof Obermann, Martin Horneffer · Vieweg+Teubner eBooks · 2009
High Level Data Link Control (HDLC) ist ein Layer 2 Protokoll und basiert auf SDLC (Synchronous Data Link Control), dass in der IBM-Architektur SNA (Systems Network Architecture) verwendet wird. HDLC und HDLC-Varianten werden beispielsweise bei X.25, GSM, ISDN, Frame Relay und PPP verwendet. HDLC wurde von der ISO im Standard ISO 3309 spezifiziert. CCITT (heute ITU-T) übernahm HDLC und machte daraus die Link Access Procedure (LAP) als Teil von X.25, änderte es aber später noch einmal auf LAPB ab, um Kompatibilität zu späteren HDLC Versionen zu gewährleisten. HDLC, LAP und LAPB basieren alle auf denselben Prinzipien [1]. Im Folgenden soll exemplarisch HDLC beschrieben werden. Bild 3-1 zeigt den HDLC-Rahmen gemäß ISO 3309.
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SpringerReference · 2011
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Blue Book · 2003
CCSDS Historical Document This document’s Historical status indicates that it is no longer current. It has either been replaced by a newer issue or withdrawn because it was deemed obsolete. Current CCSDS publications are maintained at the following location:
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Rahul Banerjee · 2010
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Peter Boait, Geoff Neville, Ruth Norris et al. · 1988
The Data Link Layer (sometimes abbreviated to Link Layer) provides transparent transfer of data link service data units between network entities. The Physical Layer described in the previous chapter provides transparent transmission of physical service data units between data link entities. Physical service data units consist of one bit in serial transmission or n bits in parallel transmission. In the Data Link Layer the service data unit is an arbitrary but variable number of bits, containing user data and protocol information from the layers above.
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Internet and communications · 2003
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J. Dunlop, Demessie Girma, James Irvine · 2013
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Christian Baun · 2025
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