SGW(Serving Gateway)
The SGW node handles the user data traffic, but isn' t responsible for the signaling data used. It transports IP data from UE's to the LTE Core Network. The SGW also routes incoming and outgoing IP packets for better system collaboration and serves as an anchor for the UE when it moves from one eNodeB to another.
PGW (PDN Gateway)
PGW is the network node that connects the EPC to external IP networks. What the PGW does is that it routes packets to and from external IP networks. Beyond that, it also allocates an IP address to all UEs and enforces different policies regarding IP user traffic such as packet filtering.
A complete, affordable, and fully customizable MVNO solution is now a possibility after IPLOOK IMS and P-GW perform a successful 3GPP-compliant interoperability test with the PortaBilling platform from PortaOne.
IPLOOK's Virtualized SGW/PGW
The integrated xGW(SGW and PGW) enables virtualized network functions
IPLOOK has combined SGW and PGW in LTE into one component xGW. Both of these two elements can be deployed as virtualized element. The SGW and PGW functions could be realized as a single network element.
The SGW and PGW software processes support standard 3GPP interfaces and are interoperable with the products of other vendors.
IPLOOK xGW processes can also be distributed in a number of different ways:
▫ A single instantiation, centrally located in a data center
▫ Separate instantiations, distributed remotely
▫ An integrated model, in which some processes are located centrally and others are distributed remotely
Mobility Management
» Mobility timer management
» Attach/Detach
» TAU
» Handover
» Purge
» Service Request and Paging
Data forward and route path selection
Charging function
IP address allocation
Overload control
Interfaces comply to 3GPP R14
» Rx: between the PCRF and AF
» S5/8: between SGW and PGW
» Gx: between the PCRF and PGW
» Gy: between the OCS and PGW
» Ga: between the CG and PGW
» Gn: between the SGSN and PGW
» SGi: between the PGW and extern Packet Data Networks
» S1-U: Between eNodeB and SGW
» S11: Between SGW and MME
» S5/S8: S5 connects the visited SGW and home PGW when the users are roaming; S8 connects the local SGW and local PGW
» S4/Gn: connects SGSN and SGW
IPLOOK's compact EPC also called "IKEPC500 series", it combines MME, SGW, PGW, HSS, PCRF, IMS and DRA network elements in one X86 COTS platform what are 100% 3GPP compliant, and each of them can support all standard interfaces defined by 3GPP.
The IKEPC500 series consists of IKEPC 510 and IKEPC 520, using a unified EMS (Element Management System) to
reduce OPEX.
The IKEPC500 series can also be deployed in a centralized cloud or at the network edge, allowing a broad range of deployment scenarios.
Mobility Management Entity(MME) is a key component of the standards-defined Evolved Pack Core (EPC) for LTE. It provides mobility session management for the LTE network and supports subscriber authentication, roaming and handovers to other networks.
A Home Subscriber Server(HSS) / Home Subscriber Register(HLR) serves as the primary database repository of subscriber information within a LTE/EPC or IMS network core. By centralising all the subscriber information in a single place it allows the signalling to be separated from policy providing a stream lined, high performing network.
Policy and Charging Rules Function (PCRF), is the part of the Evolved Packet Core (EPC) that supports service data flow detection, policy enforcement and flow-based charging. It offers a comprehensive solution that enables a new generation service provider to offer multiple use cases that allow them to better control their services and align their revenue with their resources.
IPLOOK's compact EPC also called "IKEPC500 series", it combines MME, SGW, PGW, HSS, PCRF, IMS and DRA network elements in one X86 COTS platform what are 100% 3GPP compliant, and each of them can support all standard interfaces defined by 3GPP.
The IKEPC500 series consists of IKEPC 510 and IKEPC 520, using a unified EMS (Element Management System) to
reduce OPEX.
The IKEPC500 series can also be deployed in a centralized cloud or at the network edge, allowing a broad range of deployment scenarios.
Mobility Management Entity(MME) is a key component of the standards-defined Evolved Pack Core (EPC) for LTE. It provides mobility session management for the LTE network and supports subscriber authentication, roaming and handovers to other networks.
A Home Subscriber Server(HSS) / Home Subscriber Register(HLR) serves as the primary database repository of subscriber information within a LTE/EPC or IMS network core. By centralising all the subscriber information in a single place it allows the signalling to be separated from policy providing a stream lined, high performing network.
Policy and Charging Rules Function (PCRF), is the part of the Evolved Packet Core (EPC) that supports service data flow detection, policy enforcement and flow-based charging. It offers a comprehensive solution that enables a new generation service provider to offer multiple use cases that allow them to better control their services and align their revenue with their resources.
