Ltea can aggregate up to 5 carriers to make up to 100 mhz 4. The lte air interface protocol stack used for more persistent configurations of the rf. Overview of lte radio interface and radio network architecture for high speed, high capacity and low latency special articles on xi crossy lte servicetoward smart innovation lte radio interface and radio network architecture high data ratehigh capacitylow latency 1. Openairinterface tm oai wireless technology platform is a flexible platform towards an open lte ecosystem. Lte uses advanced mimo spatial multiplexing techniques.
Umts interfaces protocols on different interfaces standard numbers and links to the different standards. The layer 2 functions in lte are classified into mac, rlc, and pdcp functions 15. This lte tutorial covers lte basics, lte features, lte air interface, lte channels and lte frame structure. Protocol signaling procedures in lte radisys white paper 3 classify traffic streams using dpi and then, based on the operators policies, offload part of the traffic directly onto the internet while sending the remaining traffic to the core network. Gprs tunneling protocol gtp is used on the s1 interface between the enodeb and sgw and on the s5s8 interface. The university of houston premier mobile networking technology training program is designed to equip participants with the skills, confidence, and credibility needed to plan, design, operate, and manage todays advanced telecommunications networking and service environments. Each one of them is built in a standard way described by.
Umts air interface protocol stack part 1 adel mounir. Lte is a departure from historical cellular and telecom operations, which. Pdf lte air interface training manual figures figures fadi. Radio protocols for lte and lte advanced pdf download. This paper provides detailed coverage of the air interface technologies and protocols that survived the analysis of the highly. Physical layer carries all information from the mac transport channels over the air interface. This course focuses on the lte air interface and provides a detailed analysis of the structure and features of the physical layer, as well as the layer 2 and 3 protocols, before explaining how these are used in the operation of the radio link from initial attach, through service delivery and. Long term evolution protocol overview nxp semiconductors. The physical layer is expected to perform the following functions in order to provide the data transport service. Overview of lte radio interface and radio network architecture for high speed, high capacity and low latency. Do you need to know what information elements are within each of the lte layer 1 channels and where to find them in the physical layer resource. Click download or read online button to get radio protocols for lte and lte advanced book now. Air interface layer 2 an introduction to lte wiley. Umts air interface protocol stack part 2 adel mounir duration.
This course focuses on the lte air interface and provides a detailed analysis of the structure and features of the physical layer, as well as the layer 2 and 3 protocols, before. Lte is now the dominant air interface technology across the united states and is seeing rapid adoption in countries across the globe. To find 3gpp lte specification, click at the corresponding protocol in the images below. Download it once and read it on your kindle device, pc, phones or tablets. Within an lte network, lte interfaces connect the various components to or within the core interfaces allow the mme, sgw and pgw to cooperate with other network elements e. Pdf the era of new wireless communications is upon us. Lte uses several different types of logical, transport and physical channel, which are distinguished by the kind of information they carry and by the way in which the information is processed. Lte interfaces and protocols telecommunications blog. X2 delay and packet loss rate if packet loss occurs on the nsa x2 interface or the delay is too much. Architecture of the lte air interface an introduction to lte wiley. Basic of gsm um,abis and a interface signaling information traffic and time slots mobile station gsm bts gsm bsc gsm msc connection signaling time division multiple access. Lte tutorial tutorial on lte basics rf wireless world.
This course focuses on the lte air interface and provides a detailed analysis of the structure and features of the physical layer, as well as the layer 2 and 3 protocols, before explaining how these are used in the operation of the radio link from initial attach, through service delivery and mobility. Traffic offloaders typically will be deployed as bumpinthewire boxes between the. This nas layer terminates at mme and enb shall silently pass the nas messages to mme. Layer 2 consists of medium access control mac radio link control rlc the broadcast multicast control bmc packet data convergence protocol pdcp 3. Ltea meets and exceeds all requirements for 4g as specified in imtadvanced. Sim cards and uicc tokens device and network authentication air interface protection uu backhaul and network protection s1mme, s1u lte s security architecture is defined by 3gpps ts 33. Sim cards and uicc tokens device and network authentication air interface protection uu backhaul and network protection s1mme, s1u ltes security architecture is defined by 3gpps ts 33. Opportunities are at hand for professionals eager to learn and apply the latest theories and practices in air interface technologies. The tutorial on lte also covers lte protocol stack,lte. Frequent interactions are used to ensure student comprehension of the essential technologies used in all lte networks. The protocols used in the air interface, from the viewpoint of the mobile.
Lte security architecture 19 we will explore several lte defenses. The purpose of this document is to provide information to. This includes ofdma principles, access and nonaccess stratum protocols, channel structures, connectivity and mobility management procedures along with radio link control functions. Lte 301 mastering lte air interface award solutions. Different tunneling protocols are used depending on the interface. The entire lte system is specified by a large number of 3gpp working groups which oversee everything from the air interface to the protocol stack and the infrastructure network. In this tutorial you can learn the following topics. Lte air interface course description with the introduction of lte came the development of a new radio technology based on ofdma scfdma. Summary this chapter covers lte air interfaces high. Figure 1, presents a pictorial depiction of the discussion so far.
This lte tutorial covers lte basics,lte features,lte air interface,lte channels and lte frame structure. Initiated in 2004, the long term evolution lte project focused on enhancing the universal terrestrial radio access utra and optimizing 3gpps radio access architecture. Written by experienced researchers and professionals, lte advanced air interface technology thoroughly covers the performance targets and technology components studied by 3gpp for lte advanced. How to verify your lte protocol and rf interactions. This paper provides a preliminary look at the air interface for lte evolved utra eutra and associated key technologies required to reach its design objectives. Lte a can aggregate up to 5 carriers to make up to 100 mhz 4. Description developed by the third generation partnership project, long term evolution lte is an important new 4g wireless broadband technology that. It provides detailed description on lte radio interface, its structure. Lte long term evolution mac media access control mdi medium dependent interface mdix medium dependent interface crossover mimo multiinput multioutput mme mobility management entity nat network address translation napt network address and port translation pc personal computer pcc primary component carrier pgw pdn gateway. The content and flow are structured to introduce nr air interface with a focus on technical design principles and their impacts on performance and deployments. A detailed technical description of the air interface for lte radio access. This article provides an overview of the lte radio interface.
Initial lte eutra system performance results show a 2 to 3x improvement over a reference rel6. This paper provides detailed coverage of the airinterface technologies and protocols that survived the analysis of the highly. Lte air interface protocols request pdf researchgate. The tutorial on lte also covers lte protocol stack, lte physical layer, lte network architecture and so on. This course provides an indepth description of 5g new radio nr technology as defined by 3gpp standards and specification.
Feasibility study of enabling v2x communications by lte. It then provides an in depth explanation of the lte frame structure, channels, and multiple antenna techniques, and describes in detail how lte devices synchronize with the network, establish connections and. Protocol states and mobility one of the main lte advantages is minimizing number of states transitions that led to huge saving in processor load. The physical layer has interface to both mac and rrc sublayer.
This course focuses on the lte air interface and provides a detailed analysis of the structure and features of the physical layer, as. The figures shown below provide mapping of protocols to corresponding specifications. The lte linklayer protocols are optimized for low delay and low overhead and are simpler than their counterparts in utran. Lte air interface training manual contents contents 1 the air interface. How to verify your lte protocol and rf interactions introducing 89600 wla software peter cain, agilent technologies.
Dec 16, 2016 umts air interface protocol stack part 2 adel mounir duration. Fully distributed radio access network architecture. The sap for between two adjacent protocol layers is marked with a circle at the interface between the sublayers. Practical attacks against privacy and availability in 4g. Rrc is the protocol that is used for communication between ue and enb. Lower protocol layers provide services for upper layers. At user plane side, the application creates data packets that are processed by protocols such as tcp, udp and ip, while in the control plane, the radio resource. Do you need to know what procedures are triggered in the eps network and how. Generation 4g technologies such as long term evolution lte. The radio protocol architecture for lte can be separated into control plane architecture and user plane architecture as shown in figure 3 and figure 4. The standard is developed by the 3gpp 3rd generation partnership project and is. Request pdf on jan 1, 2011, mohammad kawser and others published lte air interface protocols find, read and cite all the research you need on. Lte air interface and procedures design, deployment and. Lets have a close look at all the layers available in eutran protocol stack which we have seen in previous chapter.
Lte or long term evolution is the brand name given to the efforts of 3gpp 4th generation technology development efforts mostly in europe and umb ultramobile broadband is the brand name for similar efforts by 3gpp2 in north america. The lte air interface physical layer offers data transport services to higher layers. Lte a meets and exceeds all requirements for 4g as specified in imtadvanced. Depending on the degree of integration, you can use various approaches for performing protocol tests. It increases the capacity and speed using a different radio interface together with core network improvements. Key features of the lte radio interface erik dahlman, anders furuskar, ylva jading, magnus lindstrom and stefan parkvall this article presents some of the key features of the radio interface for lte longterm evolution, recently approved by 3gpp. This course will cover the major aspects of the lte air interface in a manner that both technical and nontechnical people will be able to fully appreciate. Practical attacks against privacy and availability in 4glte mobile communication systems altaf shaik, ravishankar borgaonkary, n. The radio protocol architecture for lte can be separated into control plane architecture and user plane architecture as shown below. The technical paper utrautran long term evolution lte and 3gpp system architecture evolution sae is a good starting point. Lte a has frequency reuse factor of 1 since spectrum is expensive, uses highorder mimo.
Umts protocols and protocol testing definition universal mobile telecommunications system umts is envisioned as the successor to global system for mobile communications gsm. Engineers should also address performance aspects, such as whether the product can handle the highdatarate requirements of lte. Huawei b311as853 lte cpe v100r001 product description. Below is a more ellaborated diagram of eutran protocol stack.
Development of the long term evolution lte air interface has been closely linked within 3gpp to the work on a new packetswitched system architecture initially called the system architecture. The platform offers an opensource softwarebased implementation of the lte system spanning the full protocol stack of 3gpp standard both in eutran and epc. This course focuses on the lte air interface and provides a detailed analysis of the structure and features of the physical layer, as well as the layer 2 and 3 protocols, before explaining how these are used in the operation of the radio link from initial attach, through service delivery and finally mobility. The protocols over lte uu and s1 interfaces are divided into two groups. This paper focuses on protocols specified by ran2, a 3gpp radio area network working group1. Complete this form for a detailed course description course summary.
It also provides an overview of the physical layer structure and how it utilizes ofdma for over. Air interface layer 2 an introduction to lte wiley online. In telecommunications, longterm evolution lte is a standard for wireless broadband communication for mobile devices and data terminals, based on the gsmedge and umtshspa technologies. Radio protocols for lte and lte advanced download ebook. Lte uses several different types of logical, transport and physical channel, which are distinguished by. X2 fault alarms when an nsa x2 interface is faulty. It describes the air interface of lte, focusing on the access stratum protocol layers. Umts also addresses the growing demand of mobile and internet applications for new.
The air interface described in the chapter covers the concepts of lte frame structure, downlink and uplink scheduling, and detailed illustrations of the data flow across the protocol layers. Utran interfaces are the most important point to start learning about the whole system. Jeffrey cichonski joshua m franklin michael bartock s. Lowest layer in this interface is physical layer, phy. Lte enables unprecedented performance in terms of peak data rates, delay, and spectrum efficiency. Physical layer procedures such channel coding, modulation, ofdm, resource blocks, signaling procedures and scheduling both in ul and dl. As a reference, longterm evolution lte air interface. Umts signals the move into the third generation 3g of mobile networks.
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