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Customised Cutting Edge Solutions

Framework to integrate design for reliability and maintainability in modular product design

"Gateway to build competitive products"

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Long Term Evolution (LTE/4G)

LTE provides users in wireless domain,seamless IP connectivity between user equipment (UE) and the packet data network (PDN) for accessing internet as well as operator services such as Voice over LTE (VOLTE) and more ... while fixed or in mobility.

Our LTE Framework comprises of User Equipment Framework,eNodeB Framework and Evolved Packet Core (EPC) network Framework.

Current scope of Evolved Packet Core (EPC) network Framework covers MME/SGW/PGW and cross interface processing system.

Framework components enables to build all possible LTE products currently existing in market,as well as newer smarter solutions, which indirectly creates cost effective,competitive market and enhance skills to develop solution for next generation technologies such as upcoming 5G

Solutions are platform independent,portable,code written in ANSI C.

Framework allows scope of development and learning opportunities for those, who are not part of the ecosystem to gain insight of development activities of LTE interfaces and network equipment.


1) User Equipment (UE)

LTE EPS uses the concept of EPS bearers to route IP traffic between gateway in the PDN and UE.

A bearer is an IP packet flow with a defined quality of service (QoS) between the gateway and the UE. Multiple bearers can be established for a user in order to provide different QoS streams or connectivity to different PDNs.

User equipment communicates with eNodeB via Access Stratum protocol to establish radio link connection for communication with EPC for registration,mobility update and bearers setup/release through Non Access Stratum protocol

Framework comprises of Access Stratum (RRC/PDCP/RLC/MAC) and Non Access Stratum (EMM/ESM)

Framework does not addresses radio physical layer(L1).

Modular architecture components enables upgradation to future releases.

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2) E-UTRAN (eNodeB)

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eNodeB is Radio access network component of LTE which creates dynamic path between Radio and IP link, using concept of radio bearers.

Signalling Radio bearer communicates with MME for registration,mobility and bearers establishment of UE.Traffic Radio bearer communicates with SGW for routing UE application IP packets

eNodeB communicates with mutliple UE via Access Stratum protocol stack, multiple signalling EPC (MME) via IP (SCTP) and multiple traffic EPC (SGW/MBMS-GW) via IP (UDP).

Also eNodeB communicates with mutliple eNodeB via IP(SCTP) and WLAN Termination in future releases.

Framework comprises of Access Stratum (RRM/RRC/PDCP/RLC/MAC),interfaces functionality S1(MME),X2(eNodeB), M2(MBMS-GW),XW (WLAN),S1u(SGW),X2U(eNodeB),M1(MBMS-GW),XWU(WLAN) and Operation/Adminstation Management (OAM) to configure and monitoring eNodeB.

Framework does not addresses Radio physical layer (L1).

Modular architecture components enables upgradation to future releases.


3) Mobility Management Entity (MME)

MME is network component of EPC which manages registration,mobility,bearers setup/release and other features for UE by interworking with multiple eNodeB and other network components SGSN/HSS/CSS/MME/SGW/EIR/1xCSRTT/HRPD-AN/CBC/ SMS-GW/MSC/GMLC-GW/MBMS-GW/MSC-SV/ESMLC.

MME communicates with UE through Non Access Stratum protocol (EMM) via eNodeB and with HSS to validate identity and retrieve subscription data of UE during registration and also communicates with SGW for bearers setup/release based on Non Access Stratum protocol (ESM).

Framework comprises of Non Access Stratum(EMM/ESM),interface functionality of S1/S3/S6a/S7a/S10/S11/S13/S101/S102/ S121/SBc/SGd/SGs/SLg/SLs/Sm/Sv/M3 and Operation/Adminstation Management (OAM) to manage MME.

Modular architecture components enables upgradation to future releases.


4) Serving Gateway (SGW)

SGW is network component of EPC which manages traffic path for UE Application IP Packets by interworking with Mutliple eNodeB and other network components PGW/HSGW for routing to PDN gateway

SGW interwork with MME and PGW to setup/release tunnel associated with bearers between eNodeB and PGW User Plane. Tunnelling information is communicated to eNodeB by MME.

Our Framework comprises of interface functionality S4/S5-GTPv2/S8-GTPv2/S5-PMIP/S8-PMIP/S11/Gxx (Signalling), S1u,S103,S5/S8 User(Traffic) and Operation/Adminstation Management (OAM) to manage SGW.

Modular architecture components enables upgradation to future releases.

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5) Packet Gateway (PGW)

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The PDN Gateway is responsible for IP address allocation for the UE, as well as QoS enforcement and flow-based charging according to rules from the PCRF.

It is responsible for the filtering of downlink user IP packets into the different QoS-based bearers. This is performed based on Traffic Flow Templates (TFTs). The P-GW performs QoS enforcement for guaranteed bit rate (GBR) bearers.

It also serves as the mobility anchor for interworking with non-3GPP technologies such as CDMA2000 and WLAN networks.

Our Framework comprises of interface functionality S5-GTPv2,S8-GTPv2,S5-PMIP,S8-PMIP,Gx,Gy,Gc,S2a,S2b,Sgi (Signalling), S5-User,S8-User and Operation/Adminstation Management (OAM) to manage PGW.

Modular architecture components enables upgradation to future releases.


6) Applications

Applications are those which are tightly bounded with operator networks.

SMS,IMS,Proximity services and M2M

Framework comprises of User Application SMS and IMS signalling component.

Proximity services and M2M is roadmapped on need basis


7) Customised Solutions

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Framework components of UE/eNodeB/MME/SGW/PGW can be used to build multiple customised products.Few component combination use case highlighted below

Development and Testing Tools such as Simulators,Analysers,Test Equipment

User Plane Testing using eNodeB PDCP/RLC/MAC components

MME Load Test using eNodeB S1 component,User Equipment NAS/SIM Component and building Configuration component

EPC analyser using MME/SGW/PGW control/processing components

HSS Simulator using MME cross control/processing components

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5G

5G system is a network design techniques to support data connectivity and services for different profiles of data,achieved by providing operator a scalable or configureable network function(component/elements) using concepts such as Network Function Virtualization and Software Defined Networking to cater data service requirements.

In nutshell scalable multiple virtual/logical network that provides specific network capabilities and network characteristics,which allows network users access simultaneously different data services,through operator services,as well as through operator enabled third party service providers.Also a flexible network system to cater future requirements without major upgradation of networking system.

In general network access needs support of functionalities such as Network selection,Identification and authentication,Authorisation,Access control and barring,Policy control,Lawful Interception in signalling perspective and allowing specific traffic on completion of signalling criteria.

3GPP 5G architecture had defined following mentioned below network functional components to meet the above 5G network requirements.

User Equipment (UE)

(Radio) Access Network ((R)AN)

Access and Mobility Management Function (AMF)

Authentication Server Function (AUSF)

Session Management Function (SMF)

Network Slice Selection Function (NSSF)

NF Repository Function (NRF)

Network Exposure Function (NEF))

Unified Data Management (UDM)

Unified Data Repository (UDR)

Unstructured Data Storage Function(UDSF)

Policy Control Function (PCF)

Application Function (AF)

User Plane Function (UPF)

Data Network (DN), e.g. operator services, Internet access or 3rd party services,

5G-Equipment Identity Register (5G-EIR)

Security Edge Protection Proxy (SEPP)

Short Messaging Service Function (SMSF)

Location Managment Function (LMF)

Gateway Mobile Location Center (GMLC)

Public Warning System (PWS)

Network data analytics function (NWDAF)

Non 3GPP Interworking (N3IWF)

Our current 5G basic Framework comprises of all above components,to build various possible 5G products required in different stages of development and also to minimise third party tools whereever possible,which indirectly creates cost effective,competitive market and enhance skills to develop solution.

Solutions are platform independent,portable,code written in ANSI C.

Framework allows scope of development and learning opportunities for those,who are not part of the ecosystem to gain insight of development activities of 5G.

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