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TELECOM 2G,3G,4G,RF,IPv6 Study Materials: LTE DRIVE TEST PARAMETERS 3
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TELECOM 2G,3G,4G,RF,IPv6 Study Materials Mobile Communication,Question related to GSM,CDMA,WCDMA & LTE,Short description about RF Deive Test,RF Planning,RF Optimization,IPv4 & IPv6
Friday, January 11, 2013
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LTE DRIVE TEST PARAMETERS RSRP : Reference signal receive power. • RSRP (dBm) = RSSI (dBm) 10*log (12*N) Dharmendra singh
where RSSI = Received Signal Strength Indicator N: number of RBs across the RSSI is measured and depends on the BW Significance : RSRP is the most basic of the UE physical layer measurements and is the linear average power (in watts) of the downlink reference signals (RS) across the channel bandwidth for the Resource elements that carry cell specific Reference Signals. Knowledge of absolute RSRP provides the UE with essential information about the strength of cells from which path loss can be calculated and used in the algorithms for determining the optimum power settings for operating the network. Reference signal receive power is used both in idle and connected states Range : 44 to 140 dBm
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Presently 2G / 3G / WCDMA RF/Telecom Consultant in United Telecom Limited since July 2012 to Till Date.Extensive knowledge of TEMS, NEMO, PROBE, MAPINFO PROFESSIONAL, MCOM, ACTIX & SCANNER (PCTEL, R&S TSMO). View my complete profile Followers
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• RSRP term is used for coverage same as RSCP in 3G RSRQ :Reference signal receive quality RSRQ = RSRP / (RSSI / N) N is the number of resource blocks over which the RSSI is measured RSSI is wide band power, including intra cell power, interference and noise. Significance : It provides the Indication of Signal Quality . Measuring RSRQ becomes particularly important near the cell edge when decisions need to be made, regardless of absolute RSRP, to perform a handover to the next cell. Reference signal receive quality is used only during connected states
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• RSSI : Received Signal Strength Indicator. • • RSSI = wideband power = noise + serving cell power + interference power • RSSI=12*N*RSRP
http://rftelecomm.blogspot.in/2013/01/ltedrivetestparameters.html
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Range : 3 to 19.5 dB • RSRQ term is used for Quality same as Ec/No in 3G. • SINR : Signal to Noise Ratio. SINR = S / I + N S Average Received Signal Power I Average Interference power N Noise Power Significance : Is a way to measure the Quality of LTE Wireless Connections. As the energy of signal fades with distance i.e Path Loss due to environmental parameters ( e.g. background noise , interfering strength of other simultaneous transmission)
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2/7/2016
TELECOM 2G,3G,4G,RF,IPv6 Study Materials: LTE DRIVE TEST PARAMETERS • RSSI per resource block is measured over 12 resource elements. N: number of RBs across the RSSI is measured and depends on the BW Based on the above: RSRP (dBm) = RSSI (dBm) 10*log (12*N)
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• Significance :– Is the parameter represents the entire received power including the wanted power from the serving cell as well as all the co channel power & other sources of noise • CQI : Channel Quality Indicator • Range : 1 to 15 Significance: CQI is a measurement of the communication quality of wireless channels i.e. it indicates the downlink mobile radio channel quality as experienced by the UE .CQI can be a value representing a measure of channel quality for a given channel. Typically, a high value CQI is indicative of a channel with high quality and vice versa. • CQI is measured in the Dedicated mode only. • • CQI depends on the RF conditions. • • Better the CQI better the throughput will get and vice versa. • PCI : Physical Cell Id Range : 0 to 503 • Significance PCI used to identify the cell & is used to transmit the data • • PCI = PSS + 3*SSS PSS is Primary Synchronization Signal ( Identifies Cell Id ). PSS value can be 0, 1 & 2 SSS is Secondary Synchronization Signal ( identifies Cell Id group). SSS value can be 0 to 167. • BLER : Block Error Rate • Block Error Ratio is defined as the ratio of the number of erroneous blocks received to the total number of blocks transmitted • Significance A simple method by which a UE can choose an appropriate CQI value could be based on a set of Block Error Rate (BLER) thresholds . The UE would report the CQI value corresponding to the Modulation Coding Schemes that ensures BLER ≤ 10% based on the measured received signal quality • • BLER is Calculated using Cyclic Redundancy error Checking method High BLER leads to loss of Peak rates & efficiency BLER threshold should be low i.e. ≤ 10% DDownlink Throughput I n EUTRAN may use a maximum of 2 Tx antennas at the ENodeB and 2 Rx antennas at the UE ( MIMO ). Significance Target for averaged user throughput per MHz, 3 to 4 times Release 6 HSDPA i.e Higher user throughput as compared to 3G ( Over 300 Mbps downlink as compared to 14 Mbps in UMTS) The supported user throughput should scale with the spectrum bandwidth. Uplink Throughput I n EUTRAN uses a maximum of a single Tx antenna at the UE and 2 Rx antennas at the E Node B. Greater user throughput should be achievable using multiple Tx antennas at the UE ( MIMO ) . Significance Target for averaged user throughput per MHz, 2 to 3 times Release 6 Enhanced Uplink i.e Higher user throughput as compared to 3G (Over 50 Mbps Uplink as compared to 5.76 Mbps in UMTS).The user throughput should scale with the spectrum bandwidth provided that the maximum transmit power is
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2/7/2016
TELECOM 2G,3G,4G,RF,IPv6 Study Materials: LTE DRIVE TEST PARAMETERS Email id:
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Posted by Dharmendra singh at Friday, January 11, 2013 +3 Recommend this on Google
14 comments: Debashis said... Dear Dharmendra, Thank you so much for this useful information. May God bless you! April 30, 2014 at 10:26 PM
Dharmendra singh said... Welcome Dear............ April 30, 2014 at 11:36 PM
irfan tahir said... Sir i need more parameters about 2G,3G,4G LTE.PLZ help me in this matter September 17, 2014 at 10:42 PM
Gursharan Singh said...
Basic Parameter of WCDMA Basic Parameters of WCDMA Frequency Band : 2100 MHz ... WCDMA/3G Questions & Answers General 1. What is the experience and involvement in your current and previous UMTS design projects? Talk about your curr... RF Optimization and Log File Analysis in GSM Optimization and Log File Analysis in GSM 1. INTRODUCTION Every alive Network needs to be under continues control to maintain/improve th... LTE Objective Questions 1. Which type of cell provides the best level of service for average subscribers? A. Acceptable cell B. Barred Cell C. Reserved... STEPS TO INSTALL TEMS STEPS FOR INSTALLING TEMS SOFTWARE § First install .Net 3 and .NET 3.5 in your PC. § After installing TEMS, install the driver...
Thank you so much for this useful information.i need more LTE optimization basic parameter. February 13, 2015 at 1:47 AM
Softql said... Thanks for telecom blog more information our sites rf services March 19, 2015 at 3:40 AM
Rajesh said... Thankyou sir. Can you pls provide me 4g drive test materials. like scft drive test and all..... Email id
[email protected] Thanks in Advance April 14, 2015 at 10:11 PM
triloki pandey said... Thanks June 23, 2015 at 6:14 AM
mohammed adnan said... Thank you so much August 6, 2015 at 8:38 AM
Unknown said... Thanks sir September 27, 2015 at 9:19 PM
Cindy Dy said... This is just the information I am finding everywhere. Thanks for your blog, I just subscribe your blog. This is a nice blog.
Yong www.gofastek.com
http://rftelecomm.blogspot.in/2013/01/ltedrivetestparameters.html
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TELECOM 2G,3G,4G,RF,IPv6 Study Materials: LTE DRIVE TEST PARAMETERS November 1, 2015 at 7:27 PM
Cindy Dy said... This is just the information I am finding everywhere. Thanks for your blog, I just subscribe your blog. This is a nice blog.
Yong www.gofastek.com November 1, 2015 at 7:31 PM
Raees Nasser said... Thank you sir January 12, 2016 at 1:50 PM
Raees Nasser said... Thank you sir January 12, 2016 at 1:51 PM
Shakuntla Singh said... Thanku Sir . . January 27, 2016 at 11:36 PM Post a Comment Newer Post
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