SELF OPTIMIZING NETWORKS
|
|
- David Little
- 6 years ago
- Views:
Transcription
1 SELF OPTIMIZING NETWORKS
2 An LTE network is controlled by a network management system of a wide range of functions, e.g. sets the parameters that the network elements are using manages their software detects and corrects any faults in their operation Using such a management system, an operator can remotely configure and optimize every base station in the radio access network every component of the core network However, the process requires manual intervention, which can make it time-consuming, expensive and prone to error 3GPP has gradually introduced a self optimizing or Self Organizing Networks (SON) technique into LTE
3 3GPP Release 8 SON capabilities self configuration of a base station automatic establishment of communications with its neighbors interference coordination load balancing 3GPP Release 9 enhancement mobility robustness optimization random access channel optimization energy saving 3GPP Release 10 enhancement drive test minimization
4 Self optimizing networks are summarized in TR and TS The main impact of SON is on the radio access network s signaling procedures, notably the ones on the X2 interface
5 Contents 1. Self Optimizing Networks in Release 8 2. New Features in Release 9 3. Drive Test Minimization in Release 10
6 1. Self Optimizing Networks in Release Self Configuration of an enb 1.2 Automatic Neighbor Relations 1.3 Interference Coordination 1.4 Mobility Load Balancing
7 1.1 Self Configuration of an enb In LTE, a network operator can set up a new base station with minimal knowledge of the outside world, which might include the domain name of the network management system the domain names of its MMEs and serving gateways The base station can acquire the other information it needs by a process of self configuration the base station contacts the management system and downloads the software it will require for its operation it also downloads a set of configuration parameters, e.g., a tracking area code a list of PLMN identities the global cell identity maximum transmit power of each cell
8 In the configuration parameters, the management system can explicitly assign a physical cell identity to each of the base station s cells this places an unnecessary burden on the network planner, as every cell must have a different identity from any other cells that are nearby it also causes difficulties in networks that contain home base stations, which can be sited without any knowledge of their neighbors at all as an alternative, the management system can simply give the base station a short list of allowed physical cell identities the base station then chooses a physical cell identity at random from the ones that remain
9 As part of the self configuration process, the base station also runs a S1 setup procedure, to establish communications with each of the MMEs that it is connected to the base station tells the MME about its tracking area code and PLMN identities, as well as any closed subscriber groups that it belongs to the MME replies with a message that indicates its globally unique identity and can now communicate with the base station over the S1 interface A home enb belongs to a closed subscriber group (CSG) and can only be accessed by mobiles with a USIM that also belongs to the closed subscriber group
10 1.2 Automatic Neighbor Relations During the configuration process no need for a base station to find out anything about its neighboring cells no need for it to set up a neighbor list This removes a large burden from the network operator and a large potential source of error Instead, a mobile can identify a neighboring cell by itself and can tell the base station about it later on using the RRC measurement reports The base station can then establish communications with its neighbor using the automatic neighbor relation procedure shown in the following figure
11 Automatic neighbor relation procedure
12 The procedure is triggered when the base station receives a measurement report containing a physical cell identity that it was not previously aware of (1) The base station cannot contact the new cell right away, so it sends the mobile a second measurement configuration to ask for more information (2)
13 In response, the mobile reads the neighboring cell s system information and returns its global cell identity, tracking area code and PLMN list in a second measurement report (3) The base station now has enough information to initiate an S1 based handover to the new cell
14 To support X2 based handovers, the base station sends the global cell ID to the MME and asks it to return an IP address that the neighboring base station is using for communications over X2 (4) The MME is already communicating with the neighboring base station over S1, so it can send the request onwards (5) and can return the neighbor s reply (6)
15 The two base stations can now establish communications across the X2 interface (7), using X2 setup procedure During this procedure, the base stations exchange information about all the cells they are controlling, including their global cell identities physical cell identities carrier frequencies
16 A base station can also use steps 1 to 3 of this procedure to learn about neighboring cells that are using UMTS, GSM or cdma2000 In the case of UMTS, e.g., the mobile returns neighbor s global cell identity location area (LA) code routing area (RA) code PLMN identity list This is enough information for the base station to initiate an intersystem handover over S1 and also allows the base station to populate [ 輸入數據 ] the neighbor lists
17 1.3 Interference Coordination The X2-AP Load Indication procedure helps a network to minimize the interference between neighboring base stations and to implement the fractional frequency reuse schemes To use the procedure, a base station sends an X2-AP Load Information message to one of its neighbors
18 In the message, it can include three information elements for each cell that it is controlling (1) describes the transmitted power in every downlink resource block the neighbor can use this information in its scheduling procedure, by avoiding downlink transmissions to distant mobiles in resource blocks that are subject to high levels of downlink interference (2) describes the interference that the base station is receiving in every uplink resource block the neighbor can use this in a similar way, so that it does not schedule uplink transmissions from distant mobiles in resource blocks that are subject to high uplink interference
19 (3) a list of uplink resource blocks in which the base station intends to schedule distant mobiles here, the second base station is expected to avoid scheduling uplink transmissions from distant mobiles in those resource blocks, so that it does not return high levels of uplink interference to the first base station
20 1.4 Mobility Load Balancing The following figure shows a mobility load balancing or resource status reporting procedure Using this procedure, nearby base stations can cooperate to even out the load in the radio access network Resource status reporting procedure maximize the total capacity of the system
21 Using an X2-AP Resource Status Request (1), a Release 8 base station can ask one of its neighbors to report three items of information (1) the percentage of resource blocks that the neighbor is using in each of its cells, for both GBR and non GBR traffic (2) the load on the S1 interface (3) the hardware load
22 The neighbor returns an acknowledgement (2) and then reports each item periodically for both the uplink and downlink, using an X2-AP Resource Status Update (3) As a result of this information, a congested base station can hand over a mobile to a neighboring cell that has enough spare capacity and can even out the load in the radio access network
23 Release 9 adds two enhancements (1) the neighbor reports a fourth field in its Resource Status Update, the composite available capacity group, which indicates the capacity that it has available for load balancing purposes on the uplink and downlink the original base station can use this information to assist its handover decision
24 (2) Secondly, there is a risk after such a handover that the new base station will hand the mobile straight back to the old one to prevent this from happening, Release 9 introduces a X2 mobility settings change procedure using this procedure, a base station can ask a neighbor to adjust the thresholds that it is using for measurement reporting, by means of the cell specific offsets after the adjustment, the mobile should stay in the target cell, instead of being handed back
25 Release 10 adds one enhancement using an S1 direct information transfer procedure, a base station can initiate the exchange of radio access network information management (RIM) information with a UMTS or GSM neighbor the information includes the composite available capacity group in the case of an LTE cell and the cell load information group in the case of the other technologies this information can trigger a load balancing handover to a UMTS or GSM neighbor
26 2. New Features in Release Mobility Robustness Optimization 2.2 Random Access Channel Optimization 2.3 Energy Saving
27 2.1 Mobility Robustness Optimization Mobility robustness optimization is a self optimization technique that first appears in Release 9 Using this technique, a base station can gather information about any problems that have arisen due to the use of unsuitable measurement reporting thresholds It can then use the information to adjust the thresholds it is using and to correct the problem
28 There are three main causes of trouble, the first of which is shown in the figure the base station has started a handover to a new cell (1) but it has done this too late, because its measurement reporting thresholds have been poorly set alternatively, it may not have started the handover at all before any handover is executed, the mobile s received signal power falls below a threshold and its radio link fails (2) Mobility robustness optimization, triggered by a handover that was too late
29 in response, the mobile runs the cell selection procedure and discovers the cell that it should have been handed to it contacts the new cell using the random access procedure (3) and a RRC connection reestablishment procedure (4, 5, 6), in which it identifies itself using the old cell s physical cell ID and its old C-RNTI [C-RNTI:Cell Radio Network Temporary Identifier]
30 in step 6, the mobile can also indicate that it has measurements from immediately before the radio link failure of the power received from the old cell and its neighbors if it does, then the base station retrieves this information using an RRC UE Information procedure (7, 8)
31 the new base station can now tell the old base station about the problem, using a Release 9 X2-AP Radio Link Failure (RLF) Indication message (9) after a series of such reports, the old base station can take action by adjusting its measurement reporting thresholds, using proprietary optimization software
32 The next problem is shown in the figure the base station has carried out a handover too early (1), perhaps in an isolated area where the mobile is briefly receiving line-ofsight coverage from the new cell the mobile completes the handover, but its radio link soon fails (2) Mobility robustness optimization, triggered by a handover that was too early
33 on running the cell selection procedure, the mobile rediscovers the old cell, re-establishes an RRC connection (3), and identifies itself using its new physical cell ID and C-RNTI the old base station notifies the new one, as before (4)
34 however, the new base station notices that it had just received the mobile in a handover from the old one, so it tells the old base station using another Release 9 message, an X2-AP Handover Report (5) once again, the old base station can use the information to adjust its measurement thresholds
35 The final problem is in the figure the base station has handed the mobile over to the wrong cell, perhaps due to an incorrect cell specific measurement offset (1) Mobility robustness optimization, triggered by a handover to the wrong cell
36 the mobile s radio link fails as before (2) and it reestablishes an RRC connection with a third cell, the one it should have been handed to in the first place (3) in response, the third base station sends a radio link failure indication to the second (4), which notifies the original base station using a handover report as before (5)
37 Mobility robustness optimization is enhanced in Release 10, to let the system detect unnecessary handovers to another radio access technology after a handover to UMTS or GSM, the new radio access network can ask the mobile to continue measuring the signal power that it is receiving from nearby LTE cells if the signal power is sufficiently high, then the network can tell the LTE base station that it triggered the handover unnecessarily, using the S1-AP direct information transfer procedure as before, the base station can use a series of such reports to adjust its measurement reporting thresholds
38 2.2 Random Access Channel Optimization A base station can gather two types of information to help it optimize the random access channel (1) the base station can use the RRC UE information procedure to retrieve information about a mobile s last successful random access attempt the information includes the number of preambles that the mobile sent before receiving a reply and an indication of whether the contention resolution procedure failed at any stage using this information, the base station can adjust the random access channel s power settings and resource block allocations, so as to minimize the load that the channel makes on the air interface
39 (2) neighboring base stations can exchange information about the parameters that they are using for the random access channel, during the X2 setup procedure the information includes PRACH frequency offset and PRACH configuration index, which determine the resource blocks that the channel is using root sequence index, which determines the cell s choice of random access preambles using this information, the base stations can minimize the interference between random access transmissions in nearby cells, by allocating them different sets of resource blocks and different preambles
40 Note: preamble a preamble is a signal used in network communications to synchronize transmission timing between two or more systems in wireless transmissions, the radio preamble (also called a header) is a section of data at the head of a packet. the length of the preamble can affect the time it takes to transmit data by increasing the packet overhead
41 2.3 Energy Saving Save energy is achieved by switching off cells that are not being used A typical situation is the use of picocells in a shopping centre, in which a cell can be switched off outside shopping hours if it only contributes to the network s capacity, but not to its coverage If a base station supports this feature, then it can decide to switch the cell off after a long period of low load To do this, it hands any remaining mobiles over to cells that have overlapping coverage, tells them about the change using an X2-AP enb Configuration Update and switches the cell off The base station itself remains switched on, so, at a later time, a neighbor can ask the base station to switch the cell on again using an X2- AP Cell Activation Request
42 3. Drive Test Minimization in Release 10 Network operators have traditionally assessed the coverage of a radio access network by transporting measurement devices around its intended coverage area, using a drive testing technique As well as being time-consuming and expensive, this technique provides coverage data that are limited to the route of the drive test and supplies little or no information about coverage indoors Network operators do, however, have another ready supply of measurement devices in the form of the users mobiles Using a minimization of drive tests (MDT) technique, an operator can ask its mobiles to return measurements that supplement or even replace the ones obtained from traditional drive testing
43 As part of the customer care process, the operator is obliged to obtain the users consent for using their mobiles in drive test minimization The network stores the relevant information in the home subscriber server (HSS) and checks it before measurement activation If the user does consent, then two measurement modes are available immediate measurements for mobiles in RRC_CONNECTED state logged measurements for mobiles in RRC_IDLE
44 Immediate measurements the mobile measures the downlink RSRP or RSRQ and reports these quantities to the base station along with any location data that it has available [RSRP:Reference Signal Received Power, RSRQ:Reference Signal Received Quality] the base station can then return the information to the management system, using the existing network management procedures for trace reporting
45 Logged measurements a base station can also send an RRC Logged Measurement Configuration message to an active mobile, to configure it for logged measurements once it enters RRC_IDLE in idle mode, the mobile makes its measurements with a period that is a multiple of the discontinuous reception cycle it then stores the information in a log, along with time stamps and any location data that it has available
46 when the mobile next establishes an RRC connection, it can signal the availability of its measurement log using a field in the message RRC Connection Setup Complete the base station can then retrieve the logged measurements from the mobile using the RRC UE Information procedure and can forward them to the management system as before
DOWNLINK AIR-INTERFACE...
1 ABBREVIATIONS... 10 2 FUNDAMENTALS... 14 2.1 INTRODUCTION... 15 2.2 ARCHITECTURE... 16 2.3 INTERFACES... 18 2.4 CHANNEL BANDWIDTHS... 21 2.5 FREQUENCY AND TIME DIVISION DUPLEXING... 22 2.6 OPERATING
More informationBackground: Cellular network technology
Background: Cellular network technology Overview 1G: Analog voice (no global standard ) 2G: Digital voice (again GSM vs. CDMA) 3G: Digital voice and data Again... UMTS (WCDMA) vs. CDMA2000 (both CDMA-based)
More informationLTE-Advanced and Release 10
LTE-Advanced and Release 10 1. Carrier Aggregation 2. Enhanced Downlink MIMO 3. Enhanced Uplink MIMO 4. Relays 5. Release 11 and Beyond Release 10 enhances the capabilities of LTE, to make the technology
More information2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media,
2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising
More informationLTE-1x/1xEV-DO Terms Comparison
LTE-1x/1xEV-DO Terms Comparison 2/2009 1. Common/General Terms UE User Equipment Access Terminal (AT) or MS enode B Evolved Node B Base station (BTS) Downlink (DL) Transmissions from the network to the
More informationETSI TS V ( )
TS 136 133 V10.4.0 (2011-11) Technical Specification LTE; Evolved Universal Terrestrial Radio Access (E-UTRA); Requirements for support of radio resource management (3GPP TS 36.133 version 10.4.0 Release
More informationLTE Air Interface. Course Description. CPD Learning Credits. Level: 3 (Advanced) days. Very informative, instructor was engaging and knowledgeable!
Innovating Telecoms Training Very informative, instructor was engaging and knowledgeable! Watch our course intro video. LTE Air Interface Course Description With the introduction of LTE came the development
More information3GPP TS V ( )
3GPP TS 37.320 V12.2.0 (2014-09) Technical Specification 3 rd Generation Partnership Project; Technical Specification Group Radio Access Network; Universal Terrestrial Radio Access (UTRA) and Evolved Universal
More informationLTE enb - 5G gnb dual connectivity (EN-DC)
LTE enb - 5G gnb dual connectivity (EN-DC) E-UTRAN New Radio - Dual Connectivity (EN-DC) is a technology that enables introduction of 5G services and data rates in a predominantly 4G network. UEs supporting
More informationLTE enb - 5G gnb dual connectivity (EN-DC)
LTE enb - 5G gnb dual connectivity (EN-DC) E-UTRAN New Radio - Dual Connectivity (EN-DC) is a technology that enables introduction of 5G services and data rates in a predominantly 4G network. UEs supporting
More informationProgression of LTE Automatic Neighbour Relations
IOSR Journal of Electronics and Communication Engineering (IOSR-JECE) e-issn: 2278-2834,p- ISSN: 2278-8735.Volume 9, Issue 4, Ver. III (Jul - Aug. 2014), PP 54-58 Progression of LTE Automatic Neighbour
More informationLong Term Evolution (LTE)
1 Lecture 13 LTE 2 Long Term Evolution (LTE) Material Related to LTE comes from 3GPP LTE: System Overview, Product Development and Test Challenges, Agilent Technologies Application Note, 2008. IEEE Communications
More informationCellular Networks and Mobile Compu5ng COMS , Fall 2012
Cellular Networks and Mobile Compu5ng COMS 6998-11, Fall 2012 Instructor: Li Erran Li (lierranli@cs.columbia.edu) hlp://www.cs.columbia.edu/~lierranli/ coms6998-11/ 9/4/2012: Introduc5on to Cellular Networks
More informationETSI TS V8.7.0 ( ) Technical Specification
TS 136 214 V8.7.0 (2009-10) Technical Specification LTE; Evolved Universal Terrestrial Radio Access (E-UTRA); Physical layer - Measurements (3GPP TS 36.214 version 8.7.0 Release 8) 1 TS 136 214 V8.7.0
More information<Technical Report> Number of pages: 20. XGP Forum Document TWG TR
XGP Forum Document TWG-009-01-TR Title: Conformance test for XGP Global Mode Version: 01 Date: September 2, 2013 XGP Forum Classification: Unrestricted List of contents: Chapter 1 Introduction
More information10EC81-Wireless Communication UNIT-6
UNIT-6 The first form of CDMA to be implemented is IS-95, specified a dual mode of operation in the 800Mhz cellular band for both AMPS and CDMA. IS-95 standard describes the structure of wideband 1.25Mhz
More informationMobile Data Tsunami Challenges Current Cellular Technologies
1! 2! Cellular Networks Impact our Lives Cellular Core Network! More Mobile Connection! More Infrastructure! Deployment! 1010100100001011001! 0101010101001010100! 1010101010101011010! 1010010101010101010!
More informationMobile & Wireless Networking. Lecture 4: Cellular Concepts & Dealing with Mobility. [Reader, Part 3 & 4]
192620010 Mobile & Wireless Networking Lecture 4: Cellular Concepts & Dealing with Mobility [Reader, Part 3 & 4] Geert Heijenk Outline of Lecture 4 Cellular Concepts q Introduction q Cell layout q Interference
More informationWhat LTE parameters need to be Dimensioned and Optimized
What LTE parameters need to be Dimensioned and Optimized Leonhard Korowajczuk CEO/CTO CelPlan International, Inc. www.celplan.com webinar@celplan.com 8/4/2014 CelPlan International, Inc. www.celplan.com
More informationETSI TS V9.3.0 ( ) Technical Specification
TS 136 133 V9.3.0 (2010-04) Technical Specification LTE; Evolved Universal Terrestrial Radio Access (E-UTRA); Requirements for support of radio resource management (3GPP TS 36.133 version 9.3.0 Release
More informationTechnical Aspects of LTE Part I: OFDM
Technical Aspects of LTE Part I: OFDM By Mohammad Movahhedian, Ph.D., MIET, MIEEE m.movahhedian@mci.ir ITU regional workshop on Long-Term Evolution 9-11 Dec. 2013 Outline Motivation for LTE LTE Network
More informationETSI TS V ( ) Technical Specification
TS 136 214 V10.1.0 (2011-04) Technical Specification LTE; Evolved Universal Terrestrial Radio Access (E-UTRA); Physical layer; Measurements (3GPP TS 36.214 version 10.1.0 Release 10) 1 TS 136 214 V10.1.0
More information3GPP TS V8.9.0 ( )
TS 36.133 V8.9.0 (2010-03) Technical Specification 3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA); Requirements
More informationPlanning of LTE Radio Networks in WinProp
Planning of LTE Radio Networks in WinProp AWE Communications GmbH Otto-Lilienthal-Str. 36 D-71034 Böblingen mail@awe-communications.com Issue Date Changes V1.0 Nov. 2010 First version of document V2.0
More informationReferences. What is UMTS? UMTS Architecture
1 References 2 Material Related to LTE comes from 3GPP LTE: System Overview, Product Development and Test Challenges, Agilent Technologies Application Note, 2008. IEEE Communications Magazine, February
More informationCHAPTER 14 4 TH GENERATION SYSTEMS AND LONG TERM EVOLUTION
CHAPTER 14 4 TH GENERATION SYSTEMS AND LONG TERM EVOLUTION These slides are made available to faculty in PowerPoint form. Slides can be freely added, modified, and deleted to suit student needs. They represent
More informationETSI SMG#24 TDoc SMG 903 / 97. December 15-19, 1997 Source: SMG2. Concept Group Alpha - Wideband Direct-Sequence CDMA: System Description Summary
ETSI SMG#24 TDoc SMG 903 / 97 Madrid, Spain Agenda item 4.1: UTRA December 15-19, 1997 Source: SMG2 Concept Group Alpha - Wideband Direct-Sequence CDMA: System Description Summary Concept Group Alpha -
More informationTest Plan for LTE Carrier Aggregation Interoperability
Test Plan for LTE Carrier Aggregation Interoperability Version 2.0 August 2017 2016 CTIA - The Wireless Association. All rights reserved. CTIA hereby grants to CTIA Authorized Testing Laboratories (CATLs),
More informationLTE Whitepaper Santosh Kumar Dornal n wireless.blogspot.com
LTE Whitepaper Santosh Kumar Dornal http://wired n wireless.blogspot.com Table of Contents LTE Interfaces and Protocols...3 LTE Network Elements...4 LTE Radio Network...6 LTE Bearers & QoS... 17 LTE Control
More informationTITLE DOWNLINK CONTROL INFORMATION IN A WIRELESS DEVICE AND WIRELESS NETWORK CROSS-REFERENCE TO RELATED APPLICATIONS
TITLE DOWNLINK CONTROL INFORMATION IN A WIRELESS DEVICE AND WIRELESS NETWORK CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application claims the benefit of U.S. Provisional Application No. 62/289,949,
More informationETSI TS V ( )
TS 137 320 V11.3.0 (2013-04) Technical Specification Universal Mobile Telecommunications System (UMTS); LTE; Universal Terrestrial Radio Access (UTRA) and Evolved Universal Terrestrial Radio Access (E-UTRA);
More informationMACHINE TO MACHINE (M2M) COMMUNICATIONS-PART II
MACHINE TO MACHINE (M2M) COMMUNICATIONS-PART II BASICS & CHALLENGES Dr Konstantinos Dimou Senior Research Engineer Ericsson Research konstantinos.dimou@ericsson.com Overview Introduction Definition Vision
More informationIntroduction. Air Interface. LTE and UMTS Terminology and Concepts
LTE and UMTS Terminology and Concepts By Chris Reece, Subject Matter Expert - 8/2009 UMTS and LTE networks are surprisingly similar in many respects, but the terms, labels and acronyms they use are very
More informationETSI TS V9.1.1 ( ) Technical Specification
TS 136 410 V9.1.1 (2011-05) Technical Specification LTE; Evolved Universal Terrestrial Radio Access Network (E-UTRAN); S1 general aspects and principles (3GPP TS 36.410 version 9.1.1 Release 9) 1 TS 136
More informationTITLE UPLINK SIGNAL STARTING POSITION IN A WIRELESS DEVICE AND WIRELESS NETWORK
TITLE UPLINK SIGNAL STARTING POSITION IN A WIRELESS DEVICE AND WIRELESS NETWORK CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application claims the benefit of U.S. Provisional Application No. 62/332,510,
More informationIndex. API 218 APL 47 Application testing 301 Automatic Gain Control See AGC. 3GPP 18, 208, 312 3GPP specifications 47, 48, 57, 208, 220, 243, 273
Index 3GPP 18, 208, 312 3GPP specifications 47, 48, 57, 208, 220, 243, 273 AC 21, 237, 242, 263 Acquisition Indicator 217 Active set 240, 250, 285 Adjacent power leakage See APL Admission Control See AC
More informationTEPZZ _668Z B_T EP B1 (19) (11) EP B1 (12) EUROPEAN PATENT SPECIFICATION. (51) Int Cl.: H04W 56/00 ( )
(19) TEPZZ _668Z B_T (11) EP 2 166 802 B1 (12) EUROPEAN PATENT SPECIFICATION (4) Date of publication and mention of the grant of the patent: 18.03. Bulletin /12 (1) Int Cl.: H04W 6/00 (09.01) (21) Application
More informationCHAPTER 2 WCDMA NETWORK
CHAPTER 2 WCDMA NETWORK 2.1 INTRODUCTION WCDMA is a third generation mobile communication system that uses CDMA technology over a wide frequency band to provide high-speed multimedia and efficient voice
More informationETSI TS V8.2.0 ( ) Technical Specification
TS 136 133 V8.2.0 (2008-11) Technical Specification LTE; Evolved Universal Terrestrial Radio Access (E-UTRA); Requirements for support of radio resource management (3GPP TS 36.133 version 8.2.0 Release
More information3GPP TS V ( )
TS 36.410 V12.1.0 (2014-12) Technical Specification 3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access Network (E-UTRAN);
More informationResearch and Solution of Semi-persistent Scheduling Problem in LTE System
211 International Conference on Computer Science and Information Technology (ICCSIT 211) IPCSIT vol. 51 (212) (212) IACSIT Press, Singapore DOI: 1.7763/IPCSIT.212.V51.66 Research and Solution of Semi-persistent
More informationTITLE DUAL CONNECTIVITY POWER CONTROL FOR WIRELESS NETWORK AND WIRELESS DEVICE
TITLE DUAL CONNECTIVITY POWER CONTROL FOR WIRELESS NETWORK AND WIRELESS DEVICE CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application claims the benefit of U.S. Provisional Application No. 62/408,338,
More information3GPP TR V9.0.0 ( )
TR 36.805 V9.0.0 (2009-12) Technical Report 3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Study on Minimization of drive-tests in Next Generation Networks; (Release
More informationTraining Programme. 1. LTE Planning Overview. 2. Modelling a LTE Network. 3. LTE Predictions. 4. Frequency and PCI Plan Analysis
ATOLL LTE FEATURES Training Programme 1. LTE Planning Overview 2. Modelling a LTE Network 3. LTE Predictions 4. Frequency and PCI Plan Analysis 5. Monte-Carlo Based Simulations Slide 2 of 82 1. LTE Planning
More informationLTE and 1x/1xEV-DO Terminology and Concepts
LTE and 1x/1xEV-DO Terminology and Concepts By Don Hanley, Senior Consultant 2/2009 1xEV-DO and LTE networks are surprisingly similar in many respects, but the terms, labels and acronyms they use are very
More informationOptimization of Algorithms for Mobility in Cellular Systems
Master s Thesis Optimization of Algorithms for Mobility in Cellular Systems Bernt Christensen Olof Knape Department of Electrical and Information Technology, Faculty of Engineering, LTH, Lund University,
More informationETSI TS V8.1.0 ( ) Technical Specification
TS 136 410 V8.1.0 (2009-01) Technical Specification LTE; Evolved Universal Terrestrial Radio Access Network (E-UTRAN); S1 layer 1 general aspects and principles (3GPP TS 36.410 version 8.1.0 Release 8)
More informationEVALUATION OF REAL DATA CALL SET UP SUCCESS RATE IN E-UTRAN
64 Acta Electrotechnica et Informatica, Vol. 11, No. 3, 2011, 64 69, DOI: 10.2478/v10198-011-0031-x EVALUATION OF REAL DATA CALL SET UP SUCCESS RATE IN E-UTRAN Martin KOLLÁR CMT OP NW TAR, Siemens Program
More informationLTE systems: overview
LTE systems: overview Luca Reggiani LTE overview 1 Outline 1. Standard status 2. Signal structure 3. Signal generation 4. Physical layer procedures 5. System architecture 6. References LTE overview 2 Standard
More informationPolitecnico di Milano Facoltà di Ingegneria dell Informazione. 3 Basic concepts. Wireless Networks Prof. Antonio Capone
Politecnico di Milano Facoltà di Ingegneria dell Informazione 3 Basic concepts Wireless Networks Prof. Antonio Capone Wireless Networks Wireless or wired, what is better? Well, it depends on the situation!
More informationETSI TS V8.3.0 ( ) Technical Specification
TS 136 133 V8.3.0 (2008-11) Technical Specification LTE; Evolved Universal Terrestrial Radio Access (E-UTRA); Requirements for support of radio resource management (3GPP TS 36.133 version 8.3.0 Release
More informationCode Planning of 3G UMTS Mobile Networks Using ATOLL Planning Tool
Code Planning of 3G UMTS Mobile Networks Using ATOLL Planning Tool A. Benjamin Paul, Sk.M.Subani, M.Tech in Bapatla Engg. College, Assistant Professor in Bapatla Engg. College, Abstract This paper involves
More informationMobile Network Evolution Part 1. GSM and UMTS
Mobile Network Evolution Part 1 GSM and UMTS GSM Cell layout Architecture Call setup Mobility management Security GPRS Architecture Protocols QoS EDGE UMTS Architecture Integrated Communication Systems
More informationLTE Aida Botonjić. Aida Botonjić Tieto 1
LTE Aida Botonjić Aida Botonjić Tieto 1 Why LTE? Applications: Interactive gaming DVD quality video Data download/upload Targets: High data rates at high speed Low latency Packet optimized radio access
More informationDocket No.: U Uplink Transmission in a Wireless Device and Wireless Network
Uplink Transmission in a Wireless Device and Wireless Network CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application claims the benefit of U.S. Provisional Application No. 62/327,265, filed April
More information3GPP TS V ( )
TS 36.410 V10.2.0 (2011-09) Technical Specification 3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access Network (E-UTRAN);
More informationTest Plan for LTE Carrier Aggregation Interoperability
Test Plan for LTE Carrier Aggregation Interoperability Version 3.0 March 2019 2019 CTIA - The Wireless Association. All rights reserved. CTIA-The Wireless Association ( CTIA ) hereby grants CTIA Authorized
More informationDynamic Radio Resource Allocation for Group Paging Supporting Smart Meter Communications
IEEE SmartGridComm 22 Workshop - Cognitive and Machine-to-Machine Communications and Networking for Smart Grids Radio Resource Allocation for Group Paging Supporting Smart Meter Communications Chia-Hung
More informationData and Computer Communications. Chapter 10 Cellular Wireless Networks
Data and Computer Communications Chapter 10 Cellular Wireless Networks Cellular Wireless Networks 5 PSTN Switch Mobile Telecomm Switching Office (MTSO) 3 4 2 1 Base Station 0 2016-08-30 2 Cellular Wireless
More informationETSI TS V8.3.0 ( ) Technical Specification
TS 123 272 V8.3.0 (2009-03) Technical Specification Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); LTE; Circuit Switched (CS) fallback in Evolved
More informationPERFORMANCE ANALYSIS OF ADAPTIVE ANTENNA SYSTEM
PERFORMANCE ANALYSIS OF ADAPTIVE ANTENNA SYSTEM IN LTE (4G) USING OFDM TECHNIQUE Md. Yasin Ali 1, Liton Chandra Paul 2 1 Department of Electrical & Electronics Engineering, University of Information Technology
More information3GPP TS V8.3.0 ( )
TS 36.133 V8.3.0 (2008-09) Technical Specification 3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA); Requirements
More informationPXI LTE FDD and LTE TDD Measurement Suites Data Sheet
PXI LTE FDD and LTE TDD Measurement Suites Data Sheet The most important thing we build is trust A production ready ATE solution for RF alignment and performance verification UE Tx output power Transmit
More informationDesign of a UE-specific Uplink Scheduler for Narrowband Internet-of-Things (NB-IoT) Systems
1 Design of a UE-specific Uplink Scheduler for Narrowband Internet-of-Things (NB-IoT) Systems + Bing-Zhi Hsieh, + Yu-Hsiang Chao, + Ray-Guang Cheng, and ++ Navid Nikaein + Department of Electronic and
More informationLTE and NB-IoT. Luca Feltrin. RadioNetworks, DEI, Alma Mater Studiorum - Università di Bologna. Telecom Italia Mobile S.p.a. - TIM
LTE and NB-IoT Luca Feltrin RadioNetworks, DEI, Alma Mater Studiorum - Università di Bologna Telecom Italia Mobile S.p.a. - TIM Index Ø 3GPP and LTE Specifications Ø LTE o Architecture o PHY Layer o Procedures
More informationUCS-805 MOBILE COMPUTING NIT Agartala, Dept of CSE Jan-May,2011
Location Management for Mobile Cellular Systems SLIDE #3 UCS-805 MOBILE COMPUTING NIT Agartala, Dept of CSE Jan-May,2011 ALAK ROY. Assistant Professor Dept. of CSE NIT Agartala Email-alakroy.nerist@gmail.com
More informationDEVELOPMENT TRENDS OF D2D COMMUNICATIONS IN THE LTE 魏存毅國 立台北 大學通訊系
DEVELOPMENT TRENDS OF D2D COMMUNICATIONS IN THE LTE 魏存毅國 立台北 大學通訊系 The evolution A set of radio access technologies is required to satisfy future requirements Required Performance TRx Spectrum efficiency
More informationSON in 4G Mobile Networks
SON in 4G Mobile Networks Self-Optimization Techniques for Intelligent Base Stations Bell Labs Stuttgart Ulrich Barth 9. Fachtagung des ITG-FA 5.2, Oktober 2010 Self- organizing Radio Access Networks Motivation
More information3GPP TS V ( )
TS 36.523-1 V11.4.0 (2013-09) Technical Specification 3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved
More informationLTE Review. EPS Architecture Protocol Architecture Air Interface DL Scheduling EMM, ECM, RRC States QoS, QCIs & EPS Bearers
LTE Review EPS Architecture Protocol Architecture Air Interface DL Scheduling EMM, ECM, RRC States QoS, s & EPS Bearers Evolved Packet System (EPS) Architecture S6a HSS MME PCRF S1-MME S10 S11 Gxc Gx E-UTRAN
More informationCHAPTER 7 ROLE OF ADAPTIVE MULTIRATE ON WCDMA CAPACITY ENHANCEMENT
CHAPTER 7 ROLE OF ADAPTIVE MULTIRATE ON WCDMA CAPACITY ENHANCEMENT 7.1 INTRODUCTION Originally developed to be used in GSM by the Europe Telecommunications Standards Institute (ETSI), the AMR speech codec
More information3GPP TS V8.0.0 ( )
TS 36.213 V8.0.0 (2007-09) Technical Specification 3 rd Generation Partnership Project; Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA); Physical
More information(LTE Fundamental) LONG TERMS EVOLUTION
(LTE Fundamental) LONG TERMS EVOLUTION 1) - LTE Introduction 1.1: Overview and Objectives 1.2: User Expectation 1.3: Operator expectation 1.4: Mobile Broadband Evolution: the roadmap from HSPA to LTE 1.5:
More informationLTE Direct Overview. Sajith Balraj Qualcomm Research
MAY CONTAIN U.S. AND INTERNATIONAL EXPORT CONTROLLED INFORMATION This technical data may be subject to U.S. and international export, re-export, or transfer ( export ) laws. Diversion contrary to U.S.
More informationISR with Circuit Switched Fallback
ISR with CSFB - Feature Description, page 1 Call Flows, page 2 Relationships to Other Features, page 4 Relationships to Other Products, page 4 How it Works, page 5 ISR CSFB Procedures, page 6 Standards
More informationModeling and Dimensioning of Mobile Networks: from GSM to LTE. Maciej Stasiak, Mariusz Głąbowski Arkadiusz Wiśniewski, Piotr Zwierzykowski
Modeling and Dimensioning of Mobile Networks: from GSM to LTE Maciej Stasiak, Mariusz Głąbowski Arkadiusz Wiśniewski, Piotr Zwierzykowski Modeling and Dimensioning of Mobile Networks: from GSM to LTE GSM
More informationLTE IDLE MODE OPTIMIZATION IMPROVING END USER EXPERIENCES
LTE IDLE MODE OPTIMIZATION IMPROVING END USER EXPERIENCES Kwangrok Chang, Ragil Putro Wicaksono, Seiji Kunishige, Noriteru Takagaki MOTiV Research Co. Ltd., Tokyo Japan {kwangrok.chang, ragil.wicaksono,
More informationHailu, Sofonias; Säily, Mikko Hybrid paging and location tracking scheme for inactive 5G UEs
Powered by TCPDF (www.tcpdf.org) This is an electronic reprint of the original article. This reprint may differ from the original in pagination and typographic detail. Hailu, Sofonias; Säily, Mikko Hybrid
More informationMOBILE COMPUTING NIT Agartala, Dept of CSE Jan-May,2012
Location Management for Mobile Cellular Systems MOBILE COMPUTING NIT Agartala, Dept of CSE Jan-May,2012 ALAK ROY. Assistant Professor Dept. of CSE NIT Agartala Email-alakroy.nerist@gmail.com Cellular System
More informationDesign of optimized mobility capabilities in future 5G systems
Design of optimized mobility capabilities in future 5G systems Aalborg University Master Thesis, September 2014 - June 1015 Group 1053 - Wireless Communication Systems Title: Design of optimized mobility
More informationDocket No.: EE U TITLE HANDOVER OF USER EQUIPMENT WITH MULTIMEDIA BROADCAST MULTICAST SERVICES
TITLE HANDOVER OF USER EQUIPMENT WITH MULTIMEDIA BROADCAST MULTICAST SERVICES CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application claims the benefit of U.S. Provisional Application No. 62/423,644,
More informationCS6956: Wireless and Mobile Networks Lecture Notes: 3/23/2015
CS6956: Wireless and Mobile Networks Lecture Notes: 3/23/2015 GSM Global System for Mobile Communications (reference From GSM to LET by Martin Sauter) There were ~3 billion GSM users in 2010. GSM Voice
More informationMobile Data Tsunami Challenges Current Cellular Technologies
Cellular Core Network! 1! Mobile Data Tsunami Challenges Current Cellular Technologies 2! Global growth 18 Qmes from 2011 to 2016 Cellular Networks COS 461: Computer Networks Spring 2013 Guest Lecture
More informationUTRAN Radio Resource Management
UTRAN Radio Resource Management BTS 3 BTS 1 UE BTS 2 Introduction Handover Control Soft/Softer Handover Inter Frequency Handover Power Control Closed Loop Power Control Open Loop Power Control Interference
More informationCellular Network Planning and Optimization Part VI: WCDMA Basics. Jyri Hämäläinen, Communications and Networking Department, TKK, 24.1.
Cellular Network Planning and Optimization Part VI: WCDMA Basics Jyri Hämäläinen, Communications and Networking Department, TKK, 24.1.2008 Outline Network elements Physical layer Radio resource management
More informationBASIC CONCEPTS OF HSPA
284 23-3087 Uen Rev A BASIC CONCEPTS OF HSPA February 2007 White Paper HSPA is a vital part of WCDMA evolution and provides improved end-user experience as well as cost-efficient mobile/wireless broadband.
More informationETSI TS V ( )
TS 136 521-3 V14.5.0 (2018-09) TECHNICAL SPECIFICATION LTE; Evolved Universal Terrestrial Radio Access (E-UTRA); User Equipment (UE) conformance specification; Radio transmission and reception; Part 3:
More information3GPP TS V8.2.0 ( )
TS 43.022 V8.2.0 (2010-03) Technical Specification 3 rd Generation Partnership Project; Technical Specification Group GSM/EDGE Radio Access Network; Functions related to Mobile Station (MS) in idle mode
More informationWireless Test World 2009
Wireless Test World 2009 Agilent, Your Partner in Advancing Agilent, Your Partner in Advancing New New Wireless Wireless Communications Communications LTE Protocol Signaling and Control Presented by: Choi,
More informationLong Term Evolution (LTE) Radio Network Planning Using Atoll
Long Term Evolution (LTE) Radio Network Planning Using Atoll Gullipalli S.D. Rohit Gagan, Kondamuri N. Nikhitha, Electronics and Communication Department, Baba Institute of Technology and Sciences - Vizag
More informationMAPS for LCS System. LoCation Services Simulation in 2G, 3G, and 4G. Presenters:
MAPS for LCS System LoCation Services Simulation in 2G, 3G, and 4G Presenters: Matt Yost Savita Majjagi 818 West Diamond Avenue - Third Floor, Gaithersburg, MD 20878 Phone: (301) 670-4784 Fax: (301) 670-9187
More informationAdvanced Warning Message Distribution Platform for the Next-generation Mobile Communication Network
SAE Emergency Warning System Area Mail Special Articles on SAE Standardization Technology Advanced Warning Message Distribution Platform for the Next-generation Mobile Communication Network 3GPP Release
More informationLecture overview. UMTS concept UTRA FDD TDD
Lecture overview 3G UMTS concept UTRA FDD TDD 3 rd Generation of Mobile Systems Goal to create a global system enabling global roaming International Mobile Telecommunications (IMT-2000) requirements: Throughput
More informationKeysight Technologies Narrowband IoT (NB-IoT): Cellular Technology for the Hyperconnected IoT
Ihr Spezialist für Mess- und Prüfgeräte Keysight Technologies Narrowband IoT (): Cellular Technology for the Hyperconnected IoT Application Note datatec Ferdinand-Lassalle-Str. 52 72770 Reutlingen Tel.
More informationTRAINING OBJECTIVE. RF Planning Training Course will show the attendees how to plan, design and optimize networks efficiently.
TRAINING PROGRAM Diploma In Radio Network Planning DRNP Advance Diploma In Radio Network Planning - ADRNP Masters Diploma In Radio Network Planning - MDRNP TRAINING OBJECTIVE Our RF Planning Training is
More informationFrom D2D to V2X. Hung-Yu Wei. National Taiwan University. Acknowledgement to Mei-Ju Shih
From D2D to V2X Hung-Yu Wei National Taiwan University Acknowledgement to Mei-Ju Shih OUTLINE Preview RAN2#91 Rel-13 ed2d General UE-to-Network Relays ProSe discovery in partial- and outside network coverage
More informationRADIO LINK ASPECT OF GSM
RADIO LINK ASPECT OF GSM The GSM spectral allocation is 25 MHz for base transmission (935 960 MHz) and 25 MHz for mobile transmission With each 200 KHz bandwidth, total number of channel provided is 125
More informationEnhanced DRX Quick Sleeping Mechanism For Power Aware LTE System
Enhanced DRX Quick Sleeping Mechanism For Power Aware LTE System M.Leeban Moses 1, R.Alwin 2, J.Prabakaran 3 1,2,3 ECE, Coimbatore Institute of Engineering and Technology Abstract - Discontinuous Reception
More informationMobile Communication and Mobile Computing
Department of Computer Science Institute for System Architecture, Chair for Computer Networks Mobile Communication and Mobile Computing Prof. Dr. Alexander Schill http://www.rn.inf.tu-dresden.de Structure
More informationWprowadzenie do techniki LTE. Prowadzący: Szymon Raksimowicz
Wprowadzenie do techniki LTE Prowadzący: Szymon Raksimowicz Warszawa, maj 2014 Wprowadzenie do techniki LTE Szymon Raksimowicz Agenda 1. Wprowadzenie 2. Architektura EPS 3. Interfejs radiowy 4. Stos protokołów
More information