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Saturday 15 April 2017


2 - 7 YearsChennai

Job Description

As a Network Optimisation Engineer your role will be to provide network performance services covering variety of tasks , such as network performance audits , quality and capacity optimisation , parameter planning , network feature planning , network statistics analysis , troubleshooting and performance management. You are willing to work in late shifts if the project demands. Customer focused mindset and process orientation are important for providing the services with high quality. You have relevant work experience in mobile telecommunication area and solid background with 3G / LTE systems.This role requires practical knowledge of radio network planning and optimization tasks throughout the network planning process. Working knowledge of NSN system and tools would be an added advantage

Salary: Not Disclosed by Recruiter
Industry: IT-Hardware & Networking
Functional Area: IT HardwareTechnical SupportTelecom Engineering
Role Category: Telecom
Role: RF Engineer
Contact Details
Recruiter Name:HR
Contact Company:Nokia Solutions and Networks India (P)Ltd.
Reference Id:17000003ET

Friday 14 April 2017

Company : MobileComm Technologies India Pvt. Ltd.

Location : Gurgaon 

Exp : 4-7 Years

JOB DESCRIPTION:


    We need urgent requirement of Sr. RF Optimisation Engineer.


    Analyze network parameters and implementation of system changes for network optimization of Key Performance Indicators (KPIs)
    Business objects or equivalent database reporting tool SQL usage
    Ericsson OSS / Common Explorer/ENM Expertise.
    RF electronics and site engineering (radio base station topology) and Electromagnetics
    Understanding for RF design and propagation *MS Powerpoint/Office applications including Excel.
    Ability to produce presentations of analysis and work product along with presenting
    Telecom experience with Ericsson specific LTE/GSM/UMTS (3-8 yrs) LTE/GSM/UMTS (6-8 yrs) Call process algorithm, 3GPP.
    Performance KPI optimization and trending and reporting.
    Site Cluster RF optimization / tall site RF optimization / capacity layer optimization / handover optimization / parameter optimization
    Gsm/UMTS/LTE parameter auditing, changes/new features (CIQ/Scripts, integration & troubleshooting, site )
    Parameter baseline alignment for new integrated sites with Golden parameters
Salary:INR 5,00,000 - 8,00,000 P.A.
Role Category:Telecom
Role:RF Engineer

Desired Candidate Profile


    • Working Knowledge of LTE
    • Should have worked on the new carrier optimization.
    • Should have a good command on E// RAN parameter changes
    • Good knowledge of system topology and air interface parameters.
    • Good experience and knowledge of optimization parameters and performance counters
    • Good experience on use of mobile measurements for optimization
    • Good experience on the use of E///OSS and ENM and MML commands
    • Work as an subject matter expert
    • Generate RF engineering related reports in Excel, Access.
    • Monitoring , analysis and Reporting of critical KPIs CS/PS Ret., CS/PS Acc., IRAT HO optimization, HSPA throughput, NON-HS power utilization etc

  • Recruiter Name:HR Team
    Contact Company:MobileComm Technologies India Pvt Ltd
    Address:568 Udhyog Vihar Phase 5Near Post officeGURGAON,Haryana,India 122016
    Email Address:
    Telephone:0124-4374866



    JOB Description:- 
     Sr. Integration Engineer is responsible for network design, engineering implementation, or operation/ user support. Having strong knowledge of OSS and Command Line. 
    Essential Duties / Responsibilities: The area of responsibility will generally cover, several of following activities -

    Perform Data configuration for Ericson BSCs and RNCs
    Adept in managing installation & commissioning and operation / maintenance of various telecom equipment in reducing downtime and enhancing operational effectiveness of equipment. 
    Responsible for BSC/ RNC/ Site rehoming
    Iub Link Management
    Comprehensive knowledge in site creation and parameter modification on site. 
    Leads and provides external coordination, as required, in the troubleshooting and resolution of service affecting issues. 
    Responsible for the overall monitoring of alarms, activities and outages. 
    Upgrades ATM Based network to IP based routing for NodeB s
    Perform Call Trace analysis for any technology Qualification and Essential Requirements:- 

    Must be an Engg Graduate - BE/ B. Tech in Electronics & Communication stream
    Working Experience in one of the following equipment - Ericsson, Nokia, Huawei, Motorola, Alcatel lucent for 7 years
    Must have good knowledge of OSS/ Hardware/ Command line
    Working Experience in any of the technologies : GSM/ UMTS/ LTE/ GPRS/ CDMA
    Excellent communication & interpersonal skills with strong analytical, team building, problem solving and organizational abilities. 
    Should possess good knowledge on call trace analysis for any technology
    Require travel at short notice and willing to relocate to any part of world

    Why you will love this job?

    You will be responsible for the performance of RF network design, planning & optimization activities. 
    You will also perform post processing analysis, site build verifications and acceptance. 
    If you enjoy working on equipment s manufactured by Ericsson, Nortel, Nokia, Siemens and have the right knowledge of optimization, HSPA throughput and power utilization you will love working in the environment. 
Education-
UG:B.Tech/B.E. - Electronics/Telecommunication
PG:Post Graduation Not Required

Click here to Apply

    Warm Greetings from Cyient Ltd Hyderabad... !

    We are conducting daily walk in's for Telecom Engineers - HFC/FTTx Network at uppal location between 10:00 Am to 04:00 Pm. Interested and suitable candidates can directly walk in at below location. 

    Job Description:

    HFC/FTTx Network Design Engineers - Design & Build
    2 to 10 years Experience in HFC/Fiber Optics OSP Network Planning and Designs.
    Plan and Design of the FTTh, CATV & HFC network.
    Strong Knowledge in Telecom Network Topologies in FTTx, EPON, GPON, GEPON and DOCSIS 3.1
    Design the network layout using different application (Smallworld, Autocad, NE etc)
    Understanding the Input Customer Service Orders, SDH, PDH, Ethernet networks and different equipments.
    Update OSP and ISP network details.
    Understanding the Customer Requirements like ISDN, Leased lines, Pots, VPN, BRI, PRI, etc.
    Coordinate with client for any technical queries for ensuring that the delivery meets the requirement. 

    Job Location: Uppal- Hyderabad.
    Experience : 2 to 10 Years
    Qualification : Any Diploma/Graduate/Post Graduate.

    Venue :

    NSL SEZ ARENA, 9th Floor, Block-6, Survey No-1, Plot No. 6, Uppal - Ramanthapur Rd, Uppal, Hyderabad, Telangana 500039

    Phone:040 67043434

    Best Regards,
    Talent Acquisition Team.
    Cyient Ltd.

    Recruiter Name:Bala Sundaram
    Contact Company:Aricent Technologies (H) Limited
    Email Address:

Wednesday 12 April 2017

State-run telecom operator, BSNL is finally making some move in implementing the 4G services. BSNL was long-rumored to roll out 4G services in the country but never did so. BSNL is now said to launch 4G services in select areas of Telangana and Andhra Pradesh in the current financial year.



" BSNL Chief General Manager, L Anatharam of Telangana circle speaking with PTI quoted that “A total of 1,150 (4G towers) will be installed in various districts as a part of the 4G GSM expansion project to extend higher data speeds of 4G services to the customers of BSNL.”
The report also says that both the AP and Telangana circles combinedly achieved a total revenue of Rs. 2526.18 crore in 2016-17 from the previous Rs. 2463.90 crore, making it a growth of 2.53 percent from last year.
If we consider only the GSM mobile operations, the company has achieved a revenue of Rs. 1475.86 crore in 2016-17 from the previous financial year’s Rs. 1405.65 crore. The GSM revenue in up by 5 percent from the previous quarter.
In both the circles, BSNL has registered a total of 1,70,121 landline connections, up by 6.86 percent from the previous financial year. This is the first time in BSNL achieved that amount of gross landline connections.
Apart from the 4G services, BSNL is also looking to improve 3G network coverage in the state’s capital city, Hyderabad. “A total of 64 new 2G and 3G sites have been planned along the Hyderabad Metro Rail corridor for providing seamless 3G services to the customers of BSNL, and all these are planned to be commissioned progressively. Out of these sites, the first new 2G and 3G site at Nagole Metro station have already been commissioned,” says the report.
BSNL has been teasing the launch of its 4G services from 2014, but the company hasn’t rolled them till now. At the start of 2017, BSNL Chairman, Anupam Shrivastava said that the government-owned firm would launch 4G services in April 2017 and the company has made its first move towards rolling out the services.

Sunday 9 April 2017


Ericsson VAS Engineer Jobs In Saudi Arabia.
Job TitleEricsson VAS Engineer
GenderMale 
QualificationEngineering 
Apply DateASAP
SalaryNegotiable
Experience3+ year 
Contact 
Emailmklasson@saudinetworkers.com
Skill1-Good communication skill.
2-Must be experience in Liasing with service and network planning and development in the developing of the plans for extensions and changes of services or the network .
3-Set up the performance measurements and quality thresholds from statistics and CDRs .
4-Ensure that management tools have the functionality to support the operational processes
.
5-Creation of Packages and bundles on Prepaid Stack solution
 ,Testing and verification of all new packages and promotions
6-Recommend service re-design to avoid service quality problems or capacity problems .
7-Send your update cv on given mail id .
LocationSaudi Arabia 
AddressSaudi Arabia 
For More Jobs Vist :www.jobzforall.com

RF LTE Expert Jobs In India.
TitalRF LTE Expert
GanderMale 
Qualificationengineering 
Apply DateASAP
Salary5000 to 1000 USD per month
Email gurucharan.kaur@dtplin.com
Contact 
Experience10 year 
Skill1-Good commun ication skill.
2-Must be experience in Planning & designing of cellular network.
3-Complete knowledge of RAN architecture ,LTE TDD & FDD technology  ,Basics of2G, 3G & 4G Cellular Telecom , LTE call flows, LTE signaling and protocols .
4-Working experience on planning, processing and optimization tools.
5-Good analytical skills for troubleshooting of issues observed during drive test/ walk test .
6- Should possess strong execution & problem solving skills, documentation skills.
7-send your update cv on given mail id .
LocationIndia 
AddressIndia 
Tittle Nokia LTE Wireless Engineer
SexMale 
QualificationEngineering 
Apply DateASAP
Salary
Email  whung@firstpointgroup.com
Contact 
Experience5 year 
Skill1-Good communication skill.
2-Must be experience 5 year in nikia LTE Wireless Maintenance .
3-French language + point .
4-Send your update cv on given mail id .
LocationAfrica 
AddressAfrica 


LTE Power Control Mechanisim

POWER CONTROL vs. RATE CONTROL
When it comes to Packet switched technologies such as LTE, we are mainly concerned with Data rate, unless if you are supporting Voice Services  or other supplementary services i.e., VoLTE etc.
Let’s keep our focus on to Data Services alone for a moment. In order to provide data services, there can be two approaches to overcome channel variations.
  1. Rate Control
  2. Power Control

In Power Control:    Transmitted power is varied in accordance with channel quality as shown in the diagram.  Power is varied w.r.t. channel quality to provide a fixed data rate.



Power_Control_Scheme

In Rate Control:  Transmitted power remains fixed. However, in order to cope with variation in channel quality. Modulation and coding schemes are varied to compensate for channel variations.   In this case data rate is variable, while transmitted power remains fixed as shown in the picture below.




Rate_Control


POWER CONTROL IN LTE 
Let’s focus our discussion on Power Control in LTE for now.


In LTE , Power control takes place both in Downlink and Uplink. They way it takes place in Downlink and Uplink will become evident in a little bit , as we go further down the discussion.  However, a picture is worth thousand words. Therefore the picture below should explain you on Which channels in DL and UL , power control takes place.
Downlink Power Control
In case of 4G DL, rather than varying power in the Downlink, full power is distributed uniformly over the whole bandwidth. The same Power Spectral Density (PSD) is used on all DL channels. For example, PDSCH, PHICH, PDCCH etc.
How do we calculate PSD?
PSD is the power of a signal divided by Bandwidth.
PSD = Power / Bandwidth.
In case of PSD, it is normalized to one resource block.
Note: There are certain channels in DL, where power is varied accordingly. We are not going to focus on how it is done and why in this topic for the sake of discussion for now. If you have questions for power control in the Downlink, leave them in the comments below.
Instead we will focus on UPLINK POWER CONTROL, with the detailed discussion on Power control on one of the Uplink Channel as an example.
Do we Still Perform Power Control on Uplink (UL)?
As compared to Downlink. In case of Uplink in LTE, Power control is used. As the battery of the phone(UE) is power limited compared to base station power in the DL.
Uplink power control is used mainly for the following two reasons.
  1. limit intracell and intercell interference
  2. reduce UE power consumption
How to Perform  Power Control  for the Uplink?
Usually in Uplink. Power control is done in two ways.  One is
  • Conventional Power Control
  • Fractional Power control.
Conventional Power control is used in attempt to maintain a constant Signal to Interference plus Noise Ratio (SINR) at the receiver. UE increases their transmit power to fully compensate any  increase in path loss. The scheme  is shown in figure below.
Whereas for fractional Power Control scheme. It allows the received SINR to decrease as the path loss increases, i.e., the received SINR decreases as the UE moves towards cell edge. The UE transmit power at a reduced rate as the path loss increases, when compared to conventional power control, i.e, increase in path loss are only partially compensated.
Both concepts are shown beautifully in the picture below ðŸ™‚
Conventional_vs_Fractional_Power_Control
What is the advantage of Fractional Power Control ?
Fractional power control scheme improves air-interface efficiency and increase average cell throughput by reducing intercell interference.
As an example and comparison among the two schemes. UE transmit power and received power spectral density as a function of path loss are shown below. (The definition of Alpha and possible values are explained in the post further down below. )



Fractional_PowerControl_Graph
UE Transmit Power and Received Power Spectral Density (PSD) as a function of path loss (Fractional Power Control )



Conventional_Power_Control_Graph
UE Transmit Power and Received Power Spectral Density (PSD) as a function of path loss ( Conventional Power Control )

Open Loop and Closed Loop Power Control?
From the perspective of power control, it is important to understand the difference between Open Loop and Close loop power control.
Open Loop Power Control Diagram.
In case of Open Loop power control. UE will start with the objective to compensate the path loss. Whether Open Loop Power control is done using Fractional or Conventional Power Control scheme. It depends on the if they enable Fractional Power control or disable it.
If fractional power scheme is used , it forms the Open Loop component of power control.
Open loop power control can maintain target PSD as received by the eNodeB. However a  disadvantage of Open Loop Power control is, it cannot compensate for issues like slow fading. Therefore we need to introduce closed loop component.
Open_Loop_Power_Control
Closed Loop Power Control:
Close Loop power control. In this case, the closed loop component is based on feedback given by eNodeB to the UE.  The receiver in Uplink which is eNodeB will issue Special Transmit power control command (TPC) to the UE. Based on the TPC, UE will either increase or decrease its power as instructed to compensate for the path loss.  Closed loop can compensate for issues such as slow fading.
Closed_Loop_Power_Control
Why to have Open Loop and Closed Loop Power Control ? 
If you are asking , why to have two components i.e., open and close loop in the first place.
Well, a picture is wroth thousand words. Therefore take a look below.
Open_Loop_vs_Closed_Loop
Enough Background to Accelerate for Power Control on UPLINK IN LTE
If you have read down so far, Congratulations!!!! Now you are done with the necessary perquisite and background needed to understand Power Control and procedures in LTE Uplink.
Let’s dig a little deeper to perform power control on Physical Uplink Shared Channel (PUSCH)  channel.
Keep in mind the function of this PUSCH channel is to
  • Carry Data Traffic in the Uplink
  • It can also carry signaling traffic in the Uplink, only when signaling and data are being transmitted at the same time instant in the Uplink.
Side Note : For those who don’t want to go through the gory details(for your mind) of the Power control components and parameters for PUSCH. Do yourself a favor, scroll all the way down on this article and read the Quick Summary instead (4.4 mins read) .
What factors influence Power Control in Uplink on PUSCH
Now you know, what is the functionality and usage of PUSCH channel.
Let’s start with this question. Intuitively think about it.
What factors are going to affect power control on the Uplink for PUSCH.
What_factors_affect
Look at the picture above.  You know which channel we are talking about here. We are talking about PUSCH only. PUSCH = Channel which carries data traffic in the uplink and can also carry control signaling when required/needed.
For this PUSCH channel. Power control will depend upon mainly on the following factors  (though a lot more shown in picture ) .
  • Number of Resources
  • MCS
  • Path Loss
  • UE Max Power
The detailed number of parameters are listed below.
Factors_Listed
If you feel confused to see a number parameters listed above. Don’t be.
Let’s deal with these parameters on one by one, to keep our attention span sane.
UE MAX POWER
As we know based on UE class category. It cannot transmit more than its maximum UE power which is commonly 23 dBm for most LTE UEs in the Uplink.
The objective of the eNOdeB is that UE should transmit only enough power in the uplink in a range which is the minimum required amount. Neither more, nor less than that.
Transmitting more or less than the required amount causes trouble.
UE Power Max: 23 dBm
Accordingly, there are limits and thresholds specified for transmission in the uplink to keep UE uplink power in the desired range.  UE power is specified as Pcmax
                PCMAX_L ≤ PCMAX ≤ PCMAX_H
Where,
PCMAX_L = lower end of the maximum power UE is allowed to transmit
PCMAX_H       = higher end of the maximum power UE is allowed to transmit.
As an example , if  23 dBm = PCMAX_H  
and 21 dBm = PCMAX_L
in this case UE would be permitted to define its maximum output power using a value between 23 and 21 dBm.
(Note: If you have specific questions on P_CMAX_L and P_CMAX_H . Put in the comments below or send an email and we can continue the discussion)
Even though if we think intuitively, Higher uplink transmission Power can solve the Uplink throughput and accessibility and retainability issues problems related to Performance and Optimization.
However, the downside is,  it will not only drain UE battery,  plus it will result increase in inter and intra cell interference as well.
Therefore, you need to be careful with the parameters, and different factors affecting power control. By understanding the big picture and factors involved, you can always decide and optimum value.
MODELING THE POWER CONTROL on PUSCH
Now let’s come back to the part where we will model the power control equation for PUSCH channel on LTE in Uplink.
We know that we need to model the power in the uplink to an optimal value between lowest and highest value.
PUSCH Power Conrol 
We know the maximum value is
Pcmax = Pupper
And the minimum value will be equal to the one needed by the UE based on the calculations and including the factors affecting power control.
With this in mind, for a given subframe ‘i’ the power transmitted for PUSCH can be minimum of the two.
PUSCH Transmit Power (i) = min { PUPPER (i), PCALCULATED(i)}
Time to Break down, Pcalculated:
Pcalculated is the sum of Open Loop and Close Loop.
Pcalculated (i) = P calculated_open_loop (i) + P calculated_closed_loop(i)
Open Loop for PUSCH:
Open loop is dependent upon the factors which affect power control. Let’s list the factors which only affect Open Loop Power control for PUSCH. Mentioned in the diagram below.
Open_Loop_Power_Control_Factors


Therefore, arranging the open loop power control factors into an equation , to consolidate its effect.

P calculated_open_loop = 10*LOG (# of Resource Blocks) + Power needed at eNodeB +  (Path_Loss* Factor to Enable or Disable Fractional Power Control )  + MCS


Let’s break down the factors discussed in the  equation  above into reasonable expressions for Power Control on PUSCH.

# of Resource Blocks for PUSCH = MPUSCH
MPUSCH is the PUSCH bandwidth during subframe ‘i’ expressed in terms of Resource Blocks. This variable is used to increase the UE transmit power for larger resource block allocations.
The UE transmit power is increased in direct proportion to the number of allocated Resource Blocks.
In other words, the transmit power per Resource Block remains constant if other factors remain fixed. This is also referred as maintaining a constant power spectral density

Path Loss = PL
Path loss is the downlink path loss calculated by the UE as a combination of RSRP measurements and knowledge of the reference signal transmit power

 PL = Reference Signal Transmit Power – RSRP measurements.

The Reference signal transmit power is broadcast within SIB 2 and can also be signaled with an RRC Connection Reconfiguration message. Its value range from -60 to 50 dBm.


Power needed at eNodeB = Po_PUSCH
Po_PUSCH represents the eNodeB received power per Resource Block assuming a path loss of 0 dB.
The received power per Resource Block is maintained as the path loss increases when using conventional power control alone.
The received power per Resource Block is decreased as the path loss increases when using fractional power control.  (Details are below).


Factor to enable or disable Fractional Power Control   =   α
Alpha (α ) is used to configure the use of fractional power control. This is the same variable as that used by the eNodeB when calculating Po_PUSCH.
A value of 1 disables fractional power control.
Alpha can have a range of values from
  • 0,
  • 0.4,
  • 0.5,
  • 0.6,
  • 0.7,
  • 0.8,
  • 0.9,
  • 1


Modulation and Coding scheme = ∆TF
It increases the UE transmit power when transferring a large number of bits per Resource Element. This links the UE transmit power to the Modulation and Coding Scheme (MCS). The number of bits per Resource Element is high when using 64 QAM and a large transport block size. The number of bits per Resource Element is low when using QPSK and a small transport block size. Increasing the UE transmit power helps to achieve the SINR requirements associated with higher order modulation schemes and high coding rates.

Now combining all the expressions listed above into the OPEN LOOP Equation.


PCALCULATED_OPEN_LOOP = 10×LOG(MPUSCH) + PO_PUSCH + [PL × É‘] + ∆TF

As for power control, if we want to include the factor to include power control at subframe (basis)  level. Let’s call the subframe ‘i’.
The above equation will become.
PCALCULATED_OPEN_LOOP(i) = 10×LOG(MPUSCH(i)) + PO_PUSCH(i) + [PL × É‘(i)] + ∆TF(i)



CLOSED LOOP PORTION
P calculated_closed_loop = f(i)
The closed loop component depends on eNodeB providing feedback to the UE in the form of Transmit Power Control (TPC) commands.
The close loop portion of the power control depends on the following factors.
Closed_Loop_Power_Control_Factor


For those who have firm grip on LTE air interface and control channel structure scheme of LTE, they will agree that TPC commands are signaled to the UE within following Downlink Control Information (DCI) formats