This document serves as a guide to the fundamentals of how lte networks operate and explores the lte security architecture. Protocol stack for x2 user plane and x2 control plane. Interfaces are allowing mme, sgw and pgw cooperating with other network elements e. Fmpfind me, pxpproximity, htphealth thermometer, hrpheart rate, blpblood pressure, glpglucose.
Ble protocol stack profiles page 10 ble protocol stack has the functionality to communicate data in accordance with the gattbased profile adopted by bluetooth sig such as the follows. Furthermore, to enhance the explanations, the course incorporates real use cases and examples through the use of mpiricals net x virtual network analyzer. Pdf a case study on protocol stack integration for 3gpp lte. Lte protocol stack shoeb ahmed2017420001 sardar patel. Lte is a purely packetoriented technology developed in accordance with the 3gpps system architecture evolution sae effort. Lte evolved from an earlier 3gpp system known as the universal mobile telecommunication system umts, which in. System level test harness utilizing operating system timers and ethernet stackscheduler.
Lte radio protocol architecture to be become a lte expert. Complete lte protocol stack for small cell products. Jul 10, 20 this document provides a brief overview of the lte network architecture as the first technical document of lte area. Jan 08, 2012 interfaces and their protocol stacks after familiarising with main network elements, time has come to better know interfaces between those elements. So i think hope this page would help you not only for daytoday conformance testing job, but also help you get practical understandings of other 3gpp documents. Tricks to read and understand 3gpp specifications 3g lte info. The user plane contains the protocols that actually carry user data. Now lets take a close look at all the layers which are available in eutran protocol stack seen in previous chapter. 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. This model includes the lte radio protocol stack rrc, pdcp, rlc, mac, phy.
In this blog post, i describe gsm and lte in order to illustrate the differences and similarities between protocol stack implementations. This document describes the functionalities for the support of otdoa location in lte as currently defined in 3gpp and oma. Great document and easiest visualisation of protocol stack. At least to me, lte protocol conformance document is described in much clearer manner comparing to umts conformance document 34. The modules are a complete and cost efficient solution offering multi band data transmissions for low power wide area solutions in a compact form factor. Long term evolution protocol overview nxp semiconductors. Just take a brief look at the various figures diagrams shown in this page would be enough. Know protocol stack of lte uu radio interface know the main physicalrrcnas layer procedure know protocol conformance testing of 4g lte terminal. Information on the current status of this and other etsi documents is available at. Effect of network protocol and application behavior on performance junxian huang8 feng qian9 yihua guo8 yuanyuan zhou8 qiang xu8 z. Based on the eps entities and interfaces defined in chapter ii, the lte protocol stacks for the user plane and control plane are described in chapter iii.
Figure 2 shows the user plane protocol stacks for the lte network reference model shown in figure 1. Lte technology is a based on a 3gpp standard that provides for a downlink speed of up to 150 megabits per second mbps and an uplink speed of up to 50 mbps. The attached draft document provided here for historical. Below is a more elaborated diagram of protocol stack. The lte radio communication is the upgrade of the current. Smallcellstack provides a complete lte protocol stack that is portable to almost any baseband chip and operating system. The signaling connection across the lteuu interface is the radio resource control rrc signaling connection, which is stacked into the packet data convergence protocol pdcp, radio.
Lte evolved from an earlier 3gpp system known as the universal mobile telecommunication system umts, which in turn evolved from the global system for mobile communications gsm. Additionally the mme is connected to the cbc via the sbc interface. It is intended as a one stop guide to provide an overview of the otdoa feature for operators and manufacturers interested in the deployment. Long term evolution lte is the next step forward in cellular 3g services. The physical layer is the protocols interface to the real world. Details for these parts will be described in related pages, now lets to understand the concept of the protocol stack with an office condition example. On above image, we can see overview of lte protocol stack. The user plane protocol stack between the enode b and ue consists of the following sublayers. Nr radio protocol stack architecture is almost same as lte radio protocol stack architecture. In showk, 2009 a rudimentary version of the long term evolution lte protocol for the access stratum user plane is modelled using sdl. Phy physical, mac medium access control, rlc radio link control and pdcp packet data. The specifications are developed taking into consideration that they should describe the behaviors of certain layer but the implementations in most more. Lte radio protocol architecture the radio protocol architecture for lte can be separated into control plane architecture and user plane architecture as shown below.
Sep 21, 2015 lets have a close look at all the layers available in ue protocol stack. An overview of telecom wireless protocol stack layers nutaq. Jun 06, 2011 3gpp specifications are backbone of 3g, ims, hspa, enhanced utra technologies. Ble protocol stack corresponds to multiple profiles. It is designed in ansi c for flexibility and scalability, and is easy to customize and upgrade.
This paper provides an overview of the mac for 3gpp long term evolution lte also referred to as eutran, with a focus on the handset or user equipment ue. In lte, information is organized as a function of frequency as well as time, using a resource grid. A case study on protocol stack integration for 3gpp lte evolved node b. From a protocol stack perspective, the nas is the highest stratum of the control plane, as shown in figure 1. Users of the present document should be aware that the document may be subject to revision or change of status. Lte eutran and its access side protocols radisys white paper 3 radio protocol architecture access stratum logically, lte network protocols can be divided into control plane responsible for managing the transport. Start reading radio protocols for lte and lteadvanced on the free kindle. Lets have a close look at all the layers available in eutran protocol stack which we have seen in previous chapter. Pdf the present wireless technology is 4th generation 4g or long term evolution lte and. If you are already familiar with lte protocol stack or general concept of radio protocol stack, you would not need to spend too much time in reading this page. The protocol architecture of lte the 3gpp is completely reworking the network and protocol architecture of umts so lte can support high data rates and short latency times. This analysis shows that lte m supports a very similar coverage gain compared to other lpwa technologies and thus confirms lte m to be a very versatile lpwa technology. Ble protocol stack has the functionality to communicate data in accordance with the gattbased profile. Radio resource controlrrc,radio link controlrlc or mac layer and then study more about it.
These layers are implemented differently in each wireless protocol. Below diagram is a more ellaborated explaining eutran protocol stack. The nas is used to convey nonradio signalling between the user equipment ue and the mobility management entity mme for an lte eutran access. Physical layer layer 1 physical layer carries all information from. Is it possible to produce a copy without the mbms elements. This model includes core network interfaces, protocols and entities. Now that we covered each layer of lte protocol stack, it is time to combine all these layers to a complete protocol stack. Lte advanced architecture for eutran consists of pgw,sgw,mme,s1mme,enb,henb,henbgw, relay node etc.
First, the lte network reference model is defined and its basic evolved packet system eps entities and the functions of each entity are described. This course therefore sets out to provide a detailed explanation of the lte protocols that can. The transmission grant is received by the ue in downlink. This page covers lte advanced architecture and lte advanced protocol stack.
Lte provides downlink peak rates of at least 100mbits, 50 mbits in the. To understand a certain aspect of a protocol stack or encoding of pdus or to study deep into physical layer one need to understand the respective specifications. Interfaces and their protocol stacks lte and beyond tech. The x2 interface is defined between two neighbour enbs. It provide very detail of lte protocol stacks on ue side. Lte protocols course description if you are involved in the troubleshooting of lte networks, you will appreciate that having a good understanding of the protocols is critical. International journal of trend in research and development. Mar 01, 2016 this video gives overview of lte air interface protocol stack. This model includes core network interfaces, protocols and. Below is a more ellaborated diagram of eutran protocol stack. Pdf modeling lte protocol for mobile terminals using a.
It talks about nas, rrc, pdcp, rlc, mac, and physical layer. S1, s3, s4, s5 or s8, s6a, s10, s11, s and x2 interfaces of the lte network. Documents for developing ble application sample programs and tools for developing ble application note that underlined and blue word has a link to web page or document. This analysis shows that ltem supports a very similar coverage gain compared to other lpwa technologies and thus confirms ltem to be a very versatile lpwa technology. This course therefore sets out to provide a detailed explanation of the lte protocols that can be found within the eutra, eutran and epc.
Api to facilitate configuration and execution of core modulespdcp. Interfaces and their protocol stacks lte and beyond. Next, the interfaces between the eps entities and the protocol stack. I will suggest to go and compare the lte protocol stack with osi model and then pick and choose one layer e. Lte protocol stack layers lets have a close look at all the layers available in eutran protocol stack which we have seen in previous chapter. Pdf development of lte ue protocol stack at non access. The goals for lte include improving spectral efficiency, lowering costs, improving services, making use of new spectrum and reformed spectrum opportunities, and better integration with other open standards.
The figures below diagram the key protocol stacks on uu, s1, and x2 interfaces for both cplane and uplane messaging. Eps consists of lte long term evolution, which is dedicated to the evolution of. As others have mentioned its a big topic to go after lte stack protocol development. The downlink direction from network to terminal is covered first. International journal of trend in research and development, volume 25, issn 23949333. Packet data convergence protocol as specified by 3gpp 36. Pdcp packet data convergence protocol, rlc radio link control, and. Protocol overview this whitepaper presents an overview of the protocol stack for lte with the intent to describe where important functions reside along with the implications of such architectural design. This document was uploaded by user and they confirmed that.
An overview of the lte epc simulation model is depicted in the figure overview of the lte epc simulation model. These entities and protocols reside within the sgw, pgw and mme nodes, and partially within the. Therefore, our goal is to investigate a way to help close this gap between standards and implementation to help ensure that the security goals intended in the standards are actually implemented in practice. Physical layer layer 1 physical layer carries all information from the mac transport channels over the air interface. The rlc layer is used to format and transport traffic. Lte stands for long term evolution and it was started as a project in 2004 by telecommunication body known as the third generation partnership project 3gpp. Development of lte ue protocol stack at non access stratum layer. The grey region of the stack indicates the access stratum as protocols. Gls lte protocol analyzer within packetscan all ip protocol analyzer is capable of capturing, decoding and performing various test measurements across various interfaces i. You are find about lte ebooks by tag lte at an introduction to lte. The radio protocol architecture for lte can be separated into control plane architecture and user plane architecture. These entities reside entirely within the ue and the enb nodes. Lte eutran and its access side protocols radisys white paper 3 radio protocol architecture access stratum logically, lte network protocols can be divided. While reading an article on lte, i came across a term lte stack protocol development.
The protocol stack for the control plane between the ue and mme is shown below. A promising approach to enabling ubiquitous mobile vr is the edgebased scheme over 4g lte networks 47, 56, 58. On downlink, the mac in the ue interprets the transport format. The 5g layer3 is rrc layer as shown in 5g protocol stack. The nas is used to convey nonradio signalling between the user equipment ue and the mobility management entity mme for an lteeutran access. Lets have a close look at all the layers available in ue protocol stack. Radio protocols for lte and lte advanced pdf download download it once and read it on your kindle device, pc, phones or tablets. Our results suggest that the lte protocol stack can operate synchronously, thus. This is followed by an analysis of the threats posed to lte networks and supporting mitigations. Reference point for the control plane protocol between. The lteuu provides the reference point for the radio interface between the ue and enb. Lte protocol stack layers in lte tutorial 12 april 2020.
Lte cat m1 nb1 and egprs modules data sheet abstract technical data sheet describing the sizeoptimized sarar4 series lte cat m1 nb1 and egprs cellular modules. Lte advanced architecture lte advanced protocol stack. The functions of the different protocol layers in lte stack are explained below. Information flow could be divided into two groups, one is control plane, and the other is user plane. Some protocol standards attempt this by describing a protocol using a formal language speci cation, which can then be used to generate an. Start reading radio protocols for lte and lte advanced on the free kindle. This document was uploaded by user and they confirmed that they. The lte layer 2 userplane protocol stack is composed of three sublayers. An uplink packet is then described, highlighting any differences. This document provides a brief overview of the lte network architecture as the first technical document of lte area. Besides these methodological contributions, we make the following insightful observations about lte network usage.
For iot applications requiring higher data rates, low latency, full mobility, and voice in typical coverage situations, ltem is the best lpwa technology choice. Lte advanced protocol stack consists of user plane and control plane for as and nas. The protocol stack functions consist of the medium access control mac, radio link control rlc, packet data convergence protocol pdcp, and radio resource control rrc. Userplane protocol stack for slp to ueset signaling 31 figure 64. This paper provides an introduction to how the lte protocol stack operates. Lte protocol stack data flow through the ue lte stack phy function. Radio protocols for lte and lte advanced pdf download. For iot applications requiring higher data rates, low latency, full mobility, and voice in typical coverage situations, lte m is the best lpwa technology choice. Observed time difference of arrival otdoa positioning in. In this video we are going to discuss lte ue protocol stack do like it, share and subscribe the channel if you havent yet.
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