Immediate opening with Wipro Technologies Bangalore

Exp: 9 – 14 Yrs
Education: BE/B.Tech
Designation: Program Manager / Technical Manager
Skills: NMS / EMS
Job Location: Bangalore

Job Description:
ARCHITECT - L1 - WARCHTL1
Core responsibility of an incumbent in Architect roles is to design an architecture solution which meets the needs of the customer. Different levels of Architect role vary in proficiency, expertise. At higher levels incumbent is more responsible for solution design, consulting the client on appropriate solution, defining and evaluating the architecture. At L1 Prime responsibility is to work on implementing architecture or design, implementing resue / automation strategy and reviewing the design. The incumbment at this level contributes on solution definition but is not accountable or decision holder of the same.
SUITe Skill(s)
Skill1 - Architecting (L1)
Responsible for contributing to the design & architecture for small to medium projects. Works on problems of highly complex scope, through expert usage of non-standard concepts & principles requiring high levels of judgement & interpretation. Works as a guide and sets directions for medium sized projects of reasonable complexity. Applies own judgement to independently determine a course of action, which is then executed by project teams. Role is capable of finding out new methods and processes to approach complex situations in there spective area(s) of expertise. Requires extensive knowledge of multiple development technologies/ expert knowledge of one technology. Expected to continue to build upon domain knowledge and technical/ proprietary skills to reach levels of expertise, while adapting standard principles to new or changed conditions in day to day work. Has the ability to respond to detailed queries. May be called upon to advise Sr Management on specialised technical issues. Responsible for coaching, guiding and mentoring junior members in the team to help them scale up faster.
Skill2 - Wireless Access (L2)
Should be either 'GSM 301', 'CDMA 301, 'WiMAX 310' or 'UMTS 301' certified. Should have completed at least 1 VTP in Wireless Access domain. Should have at least 12 months hands-on experience in Wireless Access technologies. Good understanding on the Wireless Access technologies/products - GSM, GPRS, EDGE,CDMA, CDMA-EVDO, WiMAX, UMTS, 3GPP/3GPP2.
Skill3 - Solution Architecture (L1)
1. Ability to take the functional and non-functional requirements and propose solution that will be able to meet the requirements. 2. Work with the design team to realize the architecture by providing suggestions on design options. 3.Review and validate the design decisions taken by the design teams. 4. Work with client architecture teams in - validate the non-functional requirements -discussing and providing inputs on architecture options 5. Present the architecture and design to necessary stake holders as required. 6. Working experience with at least one common SDLC methods (RUP, Velociq)

Regards,
Jyothi 
To respond,send an email to jyothi@aimplusstaffing.com

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Transmission Phase in 3G, using ATM

Transmission Phase in 3G, using ATM pdf

In this paper ,also introduced all kind of information types offered by 3G networks and further
analyzed the weakness of the existing transmission phase in 3G networks.

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UMTS Network Design & Cost

UMTS Network Design & Cost pdf

A design exercise was carried out in order to assess the deployment cost of national UMTS networks in the 900 MHz, 1800 MHz and 2100 MHz bands. The design was carried out to provide voice & data coverage to 95% of the population and 80% of the geographic area of the Republic of Ireland. The number of base-station sites required for a 900 MHz network was found to be 533, 1013 for an 1800 MHz network and 1243 for a 2100MHz network.
Dimensioning was then carried out for an assumed subscriber profile giving a requirement for seven RNC’s to switch 4.28Gbps of traffic. The core network was then also dimensioned.
In estimating the cost of network deployment, the following network model was taken into account.

Detailed pricing was examined for turnkey rollout, the Radio Access Network (RAN), the core network, the service layer, mediation, provisioning, middleware & applications, network management and customer management.
All hardware pricing are estimates. Vendors do not publish pricing, and hardware costs are generally blended into turnkey packages including services and O&M. Vilicom has estimated pricing based on the projects on which it has worked internationally. The following costs were calculated based on recent network deployment costs for UMTS networks internationally.

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3G Network KPIs

3G Network KPIs pdf

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UMTS Layer 2

UMTS Layer 2 pdf

Layer 2 is comprised of Medium Access Control (MAC), Radio Link Control (RLC),
Packet Data Convergence Protocol (PDCP) and Broadcast Multicast Control (BMC).
Transport Channels form the service access points between MAC and the physical
layer. Logical channels form the service access points between MAC and RLC. Radio
Bearers or Radio Signalling Bearers form service access points between L2 and
higher layers (e.g. Radio Resource Control or RRC).
Peer RRC, RLC and MAC entities exist in the UE and either the Node B (idle mode) or
SRNC (connected mode).
RRC controls the L2 protocols to set up, maintain and clear down connections with
appropriate QoS.

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IP/MPLS in the Mobile Radio Access Network (RAN)

IP/MPLS in the Mobile Radio Access Network (RAN) pdf

Includes:
1. Introduction to the IP/MPLS Forum
2. MPLS in the RAN Backhaul

Issues, trends, and enablers of the transition to IP/MPLS in evolving
RAN backhaul architectures
3. MPLS Basics

MPLS fit and operation in the mobile RAN network and the support of
end-to-end SLAs, QoS, and high availability features
4. MPLS Pseudowires

The latest Pseudowire (PWE3) enablers for legacy network migration
(TDM and ATM) and their operation over IP/MPLS RAN backhaul
networks
5. MPLS OAM and Protection

Operations, Administration and Management (OAM) capabilities of
IP/MPLS RAN backhaul networks
6. Packet Synchronization and Timing
7. MPLS Mobile Backhaul Initiative – MMBI
8. IP/MPLS in the RAN

Source:Internet

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UMTS Layer 1

UMTS Layer 1 pdf

Details of UMTS Layer 1.

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Generic CDMA Principles and Techniques

Generic CDMA Principles and Techniques pdf

Code Division Multiple Access (CDMA)
In this case, a radio channel supports a number of simultaneous users who are
separated only by digital coding of their signals, such that the coding of each user’s
signal is as different as possible to every other user’s code. Careful decoding at the
receiver can then separate users. An analogy can be drawn by considering a crowded
restaurant. If many diners are speaking simultaneously, the human ear can “tune” into
one voice by using the unique audio characteristics (“coding”) of the voice. This is
possible if no diner is speaking very loudly or softly, i.e. all are speaking with similar
volume. The listener’s decoding task is made even easier if the speaker of interest
uses a language (e.g. French) different from all others (e.g. English). This is equivalent
in CDMA to a user being given a code very different from all others. CDMA appear to
offer better spectral efficiency than FDM/TDMA – perhaps 4 or 5 times better. Other
benefits will discussed later.

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Overall UMTS Architecture and Protocols

Overall UMTS Architecture and Protocols pdf

A UMTS network can be divided into the following physical domains:
1. User Domain
2. Infrastructure Domain, itself subdivided into:
a. Radio Access Network
b. Core Network
Each domain is further described in the following pages, and each may involve further subdivisions and elements.
An important feature in the standardisation of UMTS is that the internal functionality of domains is NOT specified. Instead the interfaces between them are defined and open. This means that in theory it is possible to have several network elements of the same type, with the minimum requirement for a fully featured network being to have one of each.

A UMTS system could be divided into sub-networks, operational either alone or together, but each with unique identities. A single such network is described as a Public Land Mobile Network (PLMN), and may be connected to other PLMNs, or other networks such as ISDN, PSTN or the Internet.

For example, in practical application this might mean that a single physical UTRAN infrastructure could be shared by a number of core network domains. It also means that different domain elements can be more easily sourced from different equipment manufacturers, with interoperability ensured by the standardised interfaces, thus leading to more competition and greater operator choice in sourcing infrastructure.

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Basic UMTS Procedures

Basic UMTS Procedures PDF

The procedures described in the first phase of UMTS specifications concentrate
predominantly on the air interface and UTRAN.
The Core Network is considered as an evolved GSM network, hence the procedures
are those specified for the GSM Core Network, including GPRS. As network
operators move to an All-IP network, the procedures in the core network will reflect
this and will be based more on the IETF (Internet Engineering Task Force)
specifications.
As the core network is not the subject for UMTS standardisation, it follows that the
way it interacts with UE will remain essentially that specified for GSM. Hence, when
considering UMTS procedures, we can initially concentrate on the Air Interface and
UTRAN.
It is still useful to examine the Non-Access stratum and Core Network procedures in
order to show the overall system operation, and how UTRAN and Air Interface
procedures fit into the bigger picture.

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Understanding UMTS-Planning Issues

UMTS Planning pdf

When planning any radio network there are three overall requirements to be satisfied.
Coverage planning should allow services to be provided continuously over the area
of operation. Fortunately in UMTS, the UTRAN can exist alongside the GSM radio
network, or any other compatible (radio or fixed) access network, with handovers
allowed between the different systems. This, together with the different W-CDMA
modes of operation (FDD and TDD) allows a great deal of flexibility in coverage
planning.
Sufficient capacity should ensure that calls can be completed, or data transferred
with a high probability of success. The higher the success rate (Grade of Service)
planned for, the more equipment that will need to be provided.
Quality of Service must be maintained at an acceptable level. This becomes much
more of an issue with UMTS due to the range of services (all with varying needs of
data rate, delay tolerance, error rates etc.) which can be supported.

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Understanding UMTS-WCDMA

W-CDMA applied to UMTS PDF

W-CDMA is a multiple access technique using a concept known as Spread Spectrum.
In Spread Spectrum systems, the information bandwidth is “spread” across a wider
transmission bandwidth. This transmission bandwidth is determined by a function
which is independent of the information being sent.
So the information from both simple speech and complex video services, which
clearly have very different “information bandwidth”, will both be converted to be sent
over the full frequency band defined for the system.
Application of the same spreading codes once again at the receiver returns the
transmitted signals back to their original bandwidths.
In order to allow them to be distinguished at a receiver, signals which coexist within
the transmission frequency band must be separated using codes which have a low
cross-correlation with the other codes. In other words decoding signals using the
wrong code will simply produce “noise”, since only the signal with the desired code
will be strongly recognised.
Being able to distinguish signals from different users using codes gives rise to the
term Code Division Multiple Access.

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Understanding UMTS -Architecture

The UMTS Architecture pdf

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Understanding UMTS-Services and Applications

UMTS-Services and Applications pdf

Application Note.

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Understanding UMTS -The Need for UMTS

The Need for UMTS pdf

The latest move, to 3rd Generation, further advances digital systems with the particular aim of increasing the ability to use data applications on the move (i.e. mobile computing or the wireless office), and to enable “multimedia” services, which may mix voice, graphics, video, music and so on. In order to achieve this, a key change is in increasing the ability of mobile systems to transfer larger quantities of information much faster.

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UMTS/HSDPA Backhaul Bandwidth Dimensioning

UMTS/HSDPA Backhaul Bandwidth Dimensioning pdf

This paper presents a simulation-aided approach for the dimensioning of the ATM-based Iub
interface in UMTS/HSDPA networks. Besides considering different user applications, as well
as the peculiarities of the radio protocols above and within the backhaul transport
infrastructure to estimate Iub utilization, this paper also provides insights in to the HSDPA air
interface capacity given different data traffic and voice traffic scenarios for different UE
categories (e.g. UE Cat 12, 6, 8).

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Universal Mobile Telecommunications System (UMTS)

Universal Mobile Telecommunications System (UMTS) PDF

Synchronization in UTRAN Stage 2
(3GPP TS 25.402 version 8.1.0 Release 8)

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UMTS WCDMA Technology

Background and Introduction to UMTS WCDMA Technology PDF

Contents
􀂄 Industry Survey, Update and Perspective
• Survey of competing technologies
• WCDMA releases and timeline
􀂄 WCDMA Principles
􀂄 Summary of Differences between WCDMA and CDMA2000
􀂄 WCDMA Channels
• Physical, Transport, Logical
􀂄 Timing Structure of WCDMA Channels
􀂄 Network Architecture
􀂄 Subscriber Equipment Architecture
􀂄 Power Control
􀂄 Basic Call Processing
􀂄 Handovers
• WCDMA Soft
• Hard Handover to GSM
􀂄 Base Station Performance

Source :Internet

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3G -UMTS Docs links-1

IP for 3G

http://www.4shared.com/file/84032900/94283407/IP_for_3G.html

3G UMTS Protocol Analysis

http://www.4shared.com/file/83902542/b2587cdd/Telco_-_Protocol_analysis_in_UMTS_Networks.html

3G-WCDMA Rdio planning doc

http://www.4shared.com/file/83901885/9ae49acf/Radio_network_plng_WCDMA_article.html

UMTS 3G Quick refrence

http://www.4shared.com/file/83901312/d9175bc4/UMTS3Gquickref.html

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Radio Resource Management for UMTS

radio-resource-management pdf

Source:Internet

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