ALOK KUMAR

saxena_aks@yahoo.com

      C (817) 697-5559 , (214) 850-1748

Skype ID: alok.kumar8898

Visa status: US citizen

 

·               17 years of Telecom/ IT Experience in architecture, design (system and application), development, testing, simulation and performance analysis for wireless networks (LTE, WiMax, EvDo, CDMA), embedded systems, networking and application domain.

·               Extensive experience in the field of Telecom/Networking (Verizon, Cisco, Nortel, Huawei and Punjab Communications) and Government services (Xerox- ACS) domain.

·               Played several key roles including Designer, Architect, Team Lead ,senior system dev specialist and independent contributor.

·               Expertise in Object oriented programming, Network security (authentication and authorization) , MAC layer algorithms, EPC (Evolved packet core) , schedulers, QoS for LTE and WiMax.

·               Broad experience in commercial software architecture, development and deployment.

·               Iterative development to fully understand customer needs and build the best possible solution on schedule and on budget

·               Well versed with entire project lifecycle (initiate, plan, execute, monitor & control, close).

·               Strong C++/C++11 programming experience under UNIX, LINUX, VxWorks (RTOS) and Windows.

·               Proficient in TCP/IP protocol stack and socket programming.

·               Well versed with TCP/IP protocols - conducted performance analysis for various TCP algorithms for wireless networks to optimize it for high and speed data services.

·               Manage project risks and issues; facilitate regular project status meetings; document and communicate key project decisions; provide weekly status reports to Management; effectively manage scope and change control, effort estimation.

·               Primary responsibilities include architecture, design and development of commercial software products and custom software solutions, as well as day-to-day business operations. Development is in C++/C.

·               Review technical documentation to verify compliance with client requirements and established architectural standards and guidelines.

·               Ability to translate functional requirements into technical terms relevant to the application to coordinate and assist with the detailed technical design tasks

·               Extensive experience for Mix traffic (data and real time traffic) schedulers, End to End QoS, inter and Intra user QoS Scheduler for LTE, WiMax, CDMA, 1x EvDo rev 0 and Rev A technologies.

·               Expert level embedded RTOS development experience using VxWorks and PoS Embedded solution using Veifone Verix Vx .

·               Have expertise in Object Oriented Analysis and Design (using Describe and GDPro tool based on UML).

·               Experienced with Unit, Designer, Regression and Integration Testing.

 

TECHNICAL:

 

PROGRAMMING

C++/C++11, C, and Viual studio c++ 2015 (

 

TELECOM / Embedded/NETWORKING

Device  Identity (authentication/authorization) , Mallard set top Box, PoS Embedded development, Verix Vx,  LTE, Biometric MSO300 , WiMAX, 1xEvDO, CDMA 1xRTT, VoIP, WLL, Call processing, PDSN, CTI, IVRS, MFPA, socket programming, IPC and multithreading

 

 

PROTOCOL

802.1x , EAP, TCP, RLP, UDP, IP, SNMP, SIP, fixed wireless V5.2 Protocols, RTP/RTCP.

 

OPERATING SYSTEMS

UNIX , Cisco IOS, RTOS (VxWorks), LINUX, Verifone Verix Vx, Windows,.

 

 

 

1: Verizon Wireless Inc. Irving, TX, USA( 01/2015 – continue)

2:CISCO SYSTEM, BANGALORE, INDIA (06/2012 to 09/2014)

3: XEROX-ACS INC, AUSTIN, TX USA (10/2009 to 06/2012)

4: HUAWEI TECHNOLOGIES INC, PLANO, TEXAS, USA (09/2004 to 10/2009)

5: NORTEL NETWORKS, RICHARDSON, USA (09/2000 to 08/2004)

6: PUNJAB COMMUNICATIONS LIMITED, MOHALI, INDIA (08/1998 to 03/2000).

1.	Project : OnCue IPTV
Organization	Verizon Wireless Inc, Irving, TX, USA (http://www.verizon.com )
Role	Programmer
Duration	(01/2015) – continue
Environment	C++/C++11, Mallard set top Box, Microsoft visual studio c++ 2015 , XBOX, MAC, linux.

Project Description:

       Oncue brings TV on Internet . Customer can replace their TV cable service provider and get the same experience/features  like  video on demand, program recording,  captions, TV guide  etc as cable  and save monthly bills. Oncue application can be run On Mallard Box( Verizon device) or any gaming device like XBOX, Roku .  

 

Role:

·   .Design and Implemented Disaster recovery feature which will  automatically  be enabled when any critical issue raised in set top box.

·   Design and implemented remote services like reset, reboot set top box , factory options enabled etc, 

·   Implemented Auto provisioning module for new mallard box .

·   Implemented / upgrade GUI controllers and components

·   Ported set top box once application on Mirosoft XBOX.

2.	Project : SANET charter
Organization	CISCO system , Bangalore, INDIA ( http://www.cisco.com)
Role	Technical leader
Duration	(06/2012) – (09/2014)
Environment	C++/C, Cisco 3k/4k switches/router , 802.1x , Cisco IOS, EAP and Cisco propriety component.

Project Description:

       The IEEE 802.1X standard defines a client-server-based access control and authentication protocol that restricts unauthorized devices from connecting to a LAN through publicly accessible ports. The authentication server authenticates each client connected to a switch port before making available any services offered by the switch or the LAN. It prevent unauthorized devices (clients) from gaining access to the network. As LANs extend to hotels, airports, and corporate lobbies, insecure environments could be created.

 

Role:

·   Participate in the design discussions with technical team to implement new SM architecture.

·   Review and integrate all application requirements, including functional, integration, security and performance.

·   Resolved many issues related to Dot1x, MAB and EAP framework.

·   Design and implemented new features in SM UT, moved static policy into dynamic policy  and auto configuration for devices.

·   Completed/ reviewed all appropriate documentation required by the programmers, testers, deployment team, and application management team that maintains the identity module.

Active member for few releases

 

3.	Project : Point of sale (POS) Embedded solution of  ECC, EBT and WIC for State governments (AL, VA, TX, NJ, NC,MS)
Organization	XEROX INC, Texas, USA (http://www.xerox.com )             Xerox has over 115000 employees in all over world. Xerox products and solutions encompassing communications, Federal, Healthcare and Government payment Solution. Government Payments services includes Electronics Payments cards, Electronics benefits transfer and electronics times and attendance system.
Role	Senior System dev Specialist
Duration	(11/2009) – (06/2012)
Environment	C++/C, UML, Linux, Verix V(Embedded OS)  ARM , Biometric MSO 300 device, Verifone Vx570/510, ARM thumb processor and debugger.

Project Description:

       The goal of the Child Care Tracking System is to provide an electronic system for accurate and timely capturing, tracking and reporting of time and attendance data utilizing primarily biometric technology, specifically, finger imaging. The system is not expected to provide payments to providers, but will be expected to provide the time and attendance data information needed to facilitate payment. The solution should provide flexibility so as to accommodate the state’s various types of child care providers and their equipment needs.

 

Role:

·   Participate in design discussions with technical architect from federal and various state governments departments.

·   Review and integrate all application requirements, including functional, integration, security, performance, quality, and operations requirements.

·   Architect, design, implemented and Integrate the MSO device (Bio-Metric device) with PoS Vx570/510 .

·   Architect, design and implemented the communication module between PoS and EPPIC server, compliance with ISO 8583 standards.

·   Inform the enterprise architect, program manager, director of any issues that may affect other areas of the project.

·   Work with China’s development product team to implement and enhance functionality for of EPPIC Server. Involved in the System development, code reviewing with standard process.

·   Application Architecture and High level technical design (HLD) to describe how the single application will cooperate with other state governments interface to provide an integrated solution that will achieve the architectural concept.

·   Managing project risk, timely issue resolution and risk mitigation plan.

·   Complete/ review all appropriate documentation required by the programmers, testers, deployment team, and application management team that will maintain the application.

 

 

4.	Project : LTE Codec Rate Adaptation solution for AT&T
Organization	Huawei Technologies  INC, Texas, USA ( http://www.huawei.com )         Huawei has over 135,,000 employees with 48% are dedicated to R&D - Huawei's products and solutions encompassing wireless products(HSDPA/WCDMA/EDGE/LTE/ GPRS/GSM, CDMA2000 1xEV-DO/CDMA2000 1X, TD-SCDMA, WiMAX), core network products ( IMS, Mobile Softswitch, NGN ), network products(FTTx, xDSL, Optical, Routers, LAN Switch), applications and software(IN, mobile data service, BOSS), as well as terminals(UMTS/CDMA/LTE).
Role	Designer/Senior system engineer in R &D group
Duration	04/2009 to 06/2009
Environment	Describe UML tool

 

Project Description:

For the voice application, there are certain hours during a business day when the voice traffic load is much heavier than the average so Some operators would like to introduce a Codec adaptation mechanism that is based on cell loading in LTE Rel’9 so that when an eNB experiences congestion during the peak hours, the eNB can let the UEs select a more radio resource friendly Codec rate for VoIP applications. Codec Rate Selection at Call Setup, Codec Rate Decrease Mid Call and Codec rate Increase Mid Call.

 

Role:  

·   Discussed various solutions for codec rate adaptation with Huawei architect and AT &T  technical team.

·   Delivered call flows and flow charts for the Application layer (SIP message) and ECN based solution for codec rate adaptation.

·   Participate in transitioning the designs to the programmers, and ensure a clear and complete understanding of the designs of call flows and flow charts for these solutions.

 

5.	Project : LTE system Architecture, E2E QoS , Schedulers for System Simulation
Organization	Huawei Technologies INC, Texas, USA.
Role	Designer/Senior system engineer in R &D group
Duration	07/2007 to 06/2009
Environment	C++/C, LINUX, VxWorks, OPNET simulator, QoS, RSVP, DSCP, Describe, MySQL and multithreading, EPC

 

Project Description:

LTE is a 3GPP standard  for wireless data communications technology and an evolution of the GSM/UMTS standards. The goal of LTE is to increase the capacity and speed of wireless data networks.The LTE specification provides down-link peak data rates of 300 Mbits/s , uplink peak data rates of 75 Mbits/s and QOS provisions permitting round trip time of less than 10ms. LTE supports dyanmic carrier bandwidths , from 1.4 MHz to 20 MHz and supports both FDD and TDD. The architeture of the LTE network is simplified to a flat IP based called the EPC, replaced the GPRS core networks and supports seamless handover with older technolgies like GSM, UMTS  and CDMA2000.

 

Roles: 

·   Since LTE is the evolution of UMTS, it was considerable a big challenge to change the existing Architecture and design. Participate in design discussions with technical architects.

·   Designed HLD and DDL for eRAN 2.0 LTE RRM which includes the architectures  call flows, sequence, use case and state diagrams for  E2E QoS setup for UE and network initiated , data and control plane,  modify and release for both mobile originated and terminated service, context transfer and QoS transfer modification for inter-cell mobility.

·   Designed and implemented the admission and congestion control algorithms.

·   Designed the mapping and bearer binding mechanism for S1, Radio and S5/S8 bearer.

·   Designed and implemented various MAC schedulers (Uplink and Downlink) , to allocate  air interface resources optimally based on QCI (QoS) , CQI and other weighted factors.

·   Designed and implemented  various queuing mechanism like priority Queuing, class based weighted fair and low latency  ( CB –WFQ and CB-LLQ)  and dropping mechanism like WRED to control the traffic and eNodeB load.

 

6	Project Name: WiMAX MAC layer Schedulers
Organization	Huawei Technologies  INC, Texas, USA
Role	Senior system engineer in R &D group
Duration	(01/07 to 06/07)
Environment	C++/C, UNIX, MySQL, OPNET simulator, Describe, socket programming.

 

Project Description:

           WiMax is the one of the hottest wireless broadband technology. WiMAX would operate similar to WiFi but at higher speeds, over greater distances and for a greater number of users. WiMAX has the ability to provide service even in areas that are difficult for wired infrastructure to reach and the ability to overcome the physical limitations of traditional wired infrastructure.

 

Role:      

·   Review the standards for WiMax (IEEE 802.16).

·   Implemented dynamic and semi persistent schedulers for data and real time services.

·   Designed and implemented QoS schedulers and did the performance evaluation for different type of schedulers.

 

7.	Project Name: TCP/IP Algorithms analysis for Wireless networks
Organization	Huawei Technologies  INC, Texas, USA
Role	Designer/Senior system engineer in R &D group
Duration	04/06 to 12/06)
Environment	C++/C, Describe and Switching MA tool, MySQL, BSC.

 

Project Description:      

TCP was initially designed for wired networks and hence performs poorly in the presence of delay spikes which are especially more frequent in today’s wireless mobile networks. In wired networks, BER is negligible and congestion is the main reason for the packet loss while in wireless networks, there could be various reasons for the packet loss like handover, Real time service prioritization over data services etc.

 

Role:  

·   Analyzed various TCP congestion mechanisms like slow start, TCP Tahoe, Reno, and new Reno, SACK, SNOOP and various other algorithms with the impact of RLP to TCP.

·   Designed and implemented a TCP stack on the BSC called MA (Mobile agent) to differentiate the traffic from wired to wireless networks. Packets from the transmitter are copied into the MA and if the packets are dropped due to wireless matrices, different mechanism is used to retransmit the packet.

·   Designed the TCP stack in the reverse direction, delayed ACK is constructed based on the feedback from wireless matrices.

 

8.	Project Name: Application Layer Scheduler for 1xEvDo
Organization	Huawei Technologies  INC, Texas, USA
Role	Designer/Senior system engineer in R &D group
Duration	(10/05 to 03/06)
Environment	C++/C, VxWorks, Describe, multithreading, Beyond compare, BSC and PDSN

 

Project Description:

    EvDO EV-DO was designed as an evolution of the CDMA2000 (IS-2000) standard that would support high data rates and could be deployed alongside a wireless carrier's voice services. It provides forward link air interface speeds of up to 2.4 Mbit/s with Rel. 0 and up to 3.1 Mbit/s with Rev. A. The reverse link rate for Rel. 0 can operate up to 153 kbit/s, while Rev. A can operate at up to 1.8 Mbit/s. Assignments of the RLP’s, each user have a QoS Profile and identifies as a QoS profile ID. Each Profile is associated with a particular DSCP (TOS field in IP packet); PDSN can differentiate the packet and implements the different policies to the different flows (delay sensitive and traffic sensitivity flow) in the network.

 

Role:

·   Designed a new Air interface state machine for the Enhancements in QoS in Network side.

·   Designed and implemented RLP Assignment algorithm for multi- flow packet application.

·   Design and implemented various call flows, state machines and sequence diagrams.

·   Design and implemented a new dynamic buffer management scheme to creates dynamic sizes of buffers based on the data rate in traffic sensitive flows( TCP)  and delay, jitter , packet drop QoS matrices for  delay sensitive flows( UDP) .

·   Analysis and simulate the calls statistics, used CBWFQ (queuing mechanism for different type of flows and used WRED for congestion avoidance for solving the global synchronization problem which was occurred in existing  FIFO( first in first out) mechanism. 

 

9.	Project : ACK based RLP for EvDo
Organization	Huawei Technologies  INC, Texas, USA
Role	Designer/Senior system engineer in R &D group
Duration	(03/05 to 09/05)
Environment	C++/C, VxWorks, Describe, Windriver’s Sniff, beyond compare

 

Project Description:

RLP is the NAK based application layer Wireless protocol, meaning that forward-link sender assumes that each transmission got through, and the receiver only NAKs when an out-of-order segment is received. NAK based RLP is very efficient for data services, but not much efficient for real time services.

 

Role:

·   Designed flow diagrams and proposed an ACK based RLP for SIP signaling messages to set up and release call for the following reasons which reduced the call setup delay for real time services and improved the performance. ACK based RLP can be used to reduce the call setup time for VoIP applications.

·   Performed an analysis that showed ACK based RLP enables the quicker identification of dropped signaling messages.

 

9.	Project : Forward Link schedule manager and inter user QoS
Organization	Huawei Technologies  INC, Texas, USA
Role	Designer/Senior system engineer in R &D group
Duration	(09/04 to 02/05)
Environment	C++/C, VxWorks, beyond compare, Describe, Win 2000, Sun Solaris.

 

Project Description:

In existing CDMA 2000, there was no QoS implemented for users so resourced used to allocate in First come first server basis. Client asked to allocate the resources based on the some criteria.  This schedule manager is developed for the CDMA2000 for the resources allocation fairly and provides the QoS to users based on the services registered (special, platinum, gold, silver and bronze).

 

Role:

·   Designed the call flows, sequence diagram and state diagram for forward link scheduler.

·   Designed and implemented QoS scheduling algorithm.

·   The data throughput was increased about 18% and also resources allocated to each user fairly and when QOS functionality is on, user gets guaranteed minimum data throughput.

 

10. 11. 12.	Project : CDMA 1xRTT SCH High speed Data Throughput Project:  Voice Connect solution- SIP based multimedia client Project:  CDMA –Fixed wireless (v.52)
Organization	Nortel Networks, Texas, USA. http://www.nortel.com       Nortel offers spanning packet, optical, wireless and voice technologies in more than 150 countries around the world.
Role	Software Engineer / Designer/ Programmer
Duration	(11/00 to  08/04)
Environment	C++/C, Greenhill’s MULTI C++ compiler & debugger, Rational Clear Case, VxWorks,  Windriver’s Sniff, Beyond compare, Cygwin, PDSN, Describe ,BSSM, TEAM, Web smart, MySQL, EHOT ,Passport 15K,

 

Project Description and Role:

·   Add the SCH active set management to provide the ability to change the SCH active Set candidates during an infinite burst.

·   Add a new SCH resource allocation scheme (Fair Share Algorithm) based on users’ priority (QOS) for better use of critical resources. Add the ability to preempt the infinite burst when there is contention for Resources at the BTS or BSC Preempt.

·   Design and implemented a new interface and some bug fixing for call origination, termination, and cancellation and call logs in Multimedia PC client as well as in Proxy server which is used for forwarding or responding to the request on the behalf of user agent.

 

 

14. 15. 16. 17. 18.	Project : CTI Call Billing System Project : SNMP- CTI based IVR Application Project : AIDS – CTI Hotline Inquiry System Project : CTI Telemarketing Call Center Project : Automated CTI Result Announcement System
Organization	Punjab communications limited(www.puncom.com )   Puncom is India's premier Telecom and IT equipment and solution Provider Company having successfully supplied and implemented a host of state-of-the-art Telecom, Software and integrated turnkey solutions across the country.
Role	Software engineer
Duration	(08/98 to 06/00)
Environment	C++/c, Vc++, OOA/OOD, Qnx, ODBC, dialogic cards D21, D41

 

 

Education:

Master of computer application (Hons) from M.M.M. Engineering College Gorakhpur, INDIA.